> **PROTOTYPE:** a suggestion, not an official CIAAW or IUPAC page. Official values are at [ciaaw.org](https://ciaaw.org).

# Visualization

- 84 elements with a standard atomic weight
- 14 given as an interval
- 34 without a standard atomic weight
- 689 values recommended since 1902
- 289 isotopes with an abundance

Historical values: [Historical changes of standard atomic weights](https://ciaaw.org/historical-atomic-weights.htm), CIAAW, ciaaw.org, © CIAAW 2016–2024, reproduced with the acknowledgement its terms ask for.

## Standard atomic weights

| Z | Symbol | Element | Standard atomic weight | Relative uncertainty | Since | Values since 1902 | Isotopes |
|--:|---|---|--:|--:|--:|--:|--:|
| 1 | H | hydrogen | [1.007 84, 1.008 11] | 2.7 × 10⁻⁴ | 2009 | 10 | 2 |
| 2 | He | helium | 4.002 602(2) | 10.0 × 10⁻⁷ | 1983 | 8 | 2 |
| 3 | Li | lithium | [6.938, 6.997] | 8.5 × 10⁻³ | 2009 | 8 | 2 |
| 4 | Be | beryllium | 9.012 1831(5) | 1.1 × 10⁻⁷ | 2013 | 7 | 1 |
| 5 | B | boron | [10.806, 10.821] | 1.4 × 10⁻³ | 2009 | 8 | 2 |
| 6 | C | carbon | [12.0096, 12.0116] | 1.7 × 10⁻⁴ | 2009 | 11 | 2 |
| 7 | N | nitrogen | [14.006 43, 14.007 28] | 6.1 × 10⁻⁵ | 2009 | 8 | 2 |
| 8 | O | oxygen | [15.999 03, 15.999 77] | 4.6 × 10⁻⁵ | 2009 | 4 | 3 |
| 9 | F | fluorine | 18.998 403 162(5) | 5.3 × 10⁻¹⁰ | 2021 | 10 | 1 |
| 10 | Ne | neon | 20.1797(6) | 5.9 × 10⁻⁵ | 1985 | 7 | 3 |
| 11 | Na | sodium | 22.989 769 28(2) | 1.7 × 10⁻⁹ | 2005 | 10 | 1 |
| 12 | Mg | magnesium | [24.304, 24.307] | 1.2 × 10⁻⁴ | 2011 | 7 | 3 |
| 13 | Al | aluminium | 26.981 5384(3) | 2.2 × 10⁻⁸ | 2017 | 12 | 1 |
| 14 | Si | silicon | [28.084, 28.086] | 7.1 × 10⁻⁵ | 2009 | 9 | 3 |
| 15 | P | phosphorus | 30.973 761 998(5) | 3.2 × 10⁻¹⁰ | 2013 | 13 | 1 |
| 16 | S | sulfur | [32.059, 32.076] | 5.3 × 10⁻⁴ | 2009 | 12 | 4 |
| 17 | Cl | chlorine | [35.446, 35.457] | 3.1 × 10⁻⁴ | 2009 | 7 | 2 |
| 18 | Ar | argon | [39.792, 39.963] | 4.3 × 10⁻³ | 2017 | 9 | 3 |
| 19 | K | potassium | 39.0983(1) | 5.1 × 10⁻⁶ | 1979 | 11 | 3 |
| 20 | Ca | calcium | 40.078(4) | 2.0 × 10⁻⁴ | 1983 | 6 | 6 |
| 21 | Sc | scandium | 44.955 907(4) | 1.8 × 10⁻⁷ | 2021 | 12 | 1 |
| 22 | Ti | titanium | 47.867(1) | 4.2 × 10⁻⁵ | 1993 | 5 | 5 |
| 23 | V | vanadium | 50.9415(1) | 3.9 × 10⁻⁶ | 1977 | 8 | 2 |
| 24 | Cr | chromium | 51.9961(6) | 2.3 × 10⁻⁵ | 1983 | 7 | 4 |
| 25 | Mn | manganese | 54.938 043(2) | 7.3 × 10⁻⁸ | 2017 | 10 | 1 |
| 26 | Fe | iron | 55.845(2) | 7.2 × 10⁻⁵ | 1993 | 6 | 4 |
| 27 | Co | cobalt | 58.933 194(3) | 1.0 × 10⁻⁷ | 2017 | 10 | 1 |
| 28 | Ni | nickel | 58.6934(4) | 1.4 × 10⁻⁵ | 2007 | 9 | 5 |
| 29 | Cu | copper | 63.546(3) | 9.4 × 10⁻⁵ | 1969 | 5 | 2 |
| 30 | Zn | zinc | 65.38(2) | 6.1 × 10⁻⁴ | 2007 | 9 | 5 |
| 31 | Ga | gallium | 69.723(1) | 2.9 × 10⁻⁵ | 1987 | 7 | 2 |
| 32 | Ge | germanium | 72.630(8) | 2.2 × 10⁻⁴ | 2011 | 9 | 5 |
| 33 | As | arsenic | 74.921 595(6) | 1.6 × 10⁻⁷ | 2013 | 9 | 1 |
| 34 | Se | selenium | 78.971(8) | 2.0 × 10⁻⁴ | 2013 | 5 | 6 |
| 35 | Br | bromine | [79.901, 79.907] | 7.5 × 10⁻⁵ | 2011 | 6 | 2 |
| 36 | Kr | krypton | 83.798(2) | 4.8 × 10⁻⁵ | 2001 | 8 | 6 |
| 37 | Rb | rubidium | 85.4678(3) | 7.0 × 10⁻⁶ | 1969 | 7 | 2 |
| 38 | Sr | strontium | 87.62(1) | 2.3 × 10⁻⁴ | 1969 | 5 | 4 |
| 39 | Y | yttrium | 88.905 838(2) | 4.5 × 10⁻⁸ | 2021 | 11 | 1 |
| 40 | Zr | zirconium | 91.222(3) | 6.6 × 10⁻⁵ | 2024 | 7 | 5 |
| 41 | Nb | niobium | 92.906 37(1) | 2.2 × 10⁻⁷ | 2017 | 10 | 1 |
| 42 | Mo | molybdenum | 95.95(1) | 2.1 × 10⁻⁴ | 2013 | 8 | 7 |
| 43 | Tc | technetium | [97] |  |  |  |  |
| 44 | Ru | ruthenium | 101.07(2) | 4.0 × 10⁻⁴ | 1983 | 5 | 7 |
| 45 | Rh | rhodium | 102.905 49(2) | 3.9 × 10⁻⁷ | 2017 | 8 | 1 |
| 46 | Pd | palladium | 106.42(1) | 1.9 × 10⁻⁴ | 1979 | 6 | 6 |
| 47 | Ag | silver | 107.8682(2) | 3.7 × 10⁻⁶ | 1985 | 7 | 2 |
| 48 | Cd | cadmium | 112.414(4) | 7.1 × 10⁻⁵ | 2013 | 8 | 8 |
| 49 | In | indium | 114.818(1) | 1.7 × 10⁻⁵ | 2011 | 8 | 2 |
| 50 | Sn | tin | 118.710(7) | 1.2 × 10⁻⁴ | 1983 | 7 | 10 |
| 51 | Sb | antimony | 121.760(1) | 1.6 × 10⁻⁵ | 1993 | 8 | 2 |
| 52 | Te | tellurium | 127.60(3) | 4.7 × 10⁻⁴ | 1969 | 5 | 8 |
| 53 | I | iodine | 126.904 47(3) | 4.7 × 10⁻⁷ | 1985 | 9 | 1 |
| 54 | Xe | xenon | 131.293(6) | 9.1 × 10⁻⁵ | 1999 | 10 | 9 |
| 55 | Cs | caesium | 132.905 451 96(6) | 9.0 × 10⁻¹⁰ | 2013 | 11 | 1 |
| 56 | Ba | barium | 137.327(7) | 1.0 × 10⁻⁴ | 1985 | 7 | 7 |
| 57 | La | lanthanum | 138.905 47(7) | 1.0 × 10⁻⁶ | 2005 | 9 | 2 |
| 58 | Ce | cerium | 140.116(1) | 1.4 × 10⁻⁵ | 1995 | 7 | 4 |
| 59 | Pr | praseodymium | 140.907 66(1) | 1.4 × 10⁻⁷ | 2017 | 9 | 1 |
| 60 | Nd | neodymium | 144.242(3) | 4.2 × 10⁻⁵ | 2005 | 6 | 7 |
| 61 | Pm | promethium | [145] |  |  |  |  |
| 62 | Sm | samarium | 150.36(2) | 2.7 × 10⁻⁴ | 2005 | 8 | 7 |
| 63 | Eu | europium | 151.964(1) | 1.3 × 10⁻⁵ | 1995 | 6 | 2 |
| 64 | Gd | gadolinium | 157.249(2) | 2.5 × 10⁻⁵ | 2024 | 9 | 7 |
| 65 | Tb | terbium | 158.925 354(7) | 8.8 × 10⁻⁸ | 2021 | 10 | 1 |
| 66 | Dy | dysprosium | 162.500(1) | 1.2 × 10⁻⁵ | 2001 | 7 | 7 |
| 67 | Ho | holmium | 164.930 329(5) | 6.1 × 10⁻⁸ | 2021 | 12 | 1 |
| 68 | Er | erbium | 167.259(3) | 3.6 × 10⁻⁵ | 1999 | 9 | 6 |
| 69 | Tm | thulium | 168.934 219(5) | 5.9 × 10⁻⁸ | 2021 | 12 | 1 |
| 70 | Yb | ytterbium | 173.045(10) | 1.2 × 10⁻⁴ | 2015 | 9 | 7 |
| 71 | Lu | lutetium | 174.966 69(5) | 5.7 × 10⁻⁷ | 2024 | 9 | 2 |
| 72 | Hf | hafnium | 178.486(6) | 6.7 × 10⁻⁵ | 2019 | 6 | 6 |
| 73 | Ta | tantalum | 180.947 88(2) | 2.2 × 10⁻⁷ | 2005 | 11 | 2 |
| 74 | W | tungsten | 183.84(1) | 1.1 × 10⁻⁴ | 1991 | 6 | 5 |
| 75 | Re | rhenium | 186.207(1) | 1.1 × 10⁻⁵ | 1973 | 5 | 2 |
| 76 | Os | osmium | 190.23(3) | 3.2 × 10⁻⁴ | 1991 | 7 | 7 |
| 77 | Ir | iridium | 192.217(2) | 2.1 × 10⁻⁵ | 2017 | 6 | 2 |
| 78 | Pt | platinum | 195.084(9) | 9.2 × 10⁻⁵ | 2005 | 9 | 6 |
| 79 | Au | gold | 196.966 570(4) | 4.1 × 10⁻⁸ | 2017 | 9 | 1 |
| 80 | Hg | mercury | 200.592(3) | 3.0 × 10⁻⁵ | 2011 | 8 | 7 |
| 81 | Tl | thallium | [204.382, 204.385] | 1.5 × 10⁻⁵ | 2009 | 8 | 2 |
| 82 | Pb | lead | [206.14, 207.94] | 8.7 × 10⁻³ | 2020 | 8 | 4 |
| 83 | Bi | bismuth | 208.980 40(1) | 9.6 × 10⁻⁸ | 2005 | 10 | 1 |
| 84 | Po | polonium | [209] |  |  |  |  |
| 85 | At | astatine | [210] |  |  |  |  |
| 86 | Rn | radon | [222] |  |  |  |  |
| 87 | Fr | francium | [223] |  |  |  |  |
| 88 | Ra | radium | [226] |  |  |  |  |
| 89 | Ac | actinium | [227] |  |  |  |  |
| 90 | Th | thorium | 232.0377(4) | 3.4 × 10⁻⁶ | 2013 | 10 | 2 |
| 91 | Pa | protactinium | 231.035 88(1) | 8.7 × 10⁻⁸ | 2017 | 5 | 1 |
| 92 | U | uranium | 238.028 91(3) | 2.5 × 10⁻⁷ | 1999 | 10 | 3 |
| 93 | Np | neptunium |  |  |  |  |  |
| 94 | Pu | plutonium |  |  |  |  |  |
| 95 | Am | americium |  |  |  |  |  |
| 96 | Cm | curium |  |  |  |  |  |
| 97 | Bk | berkelium |  |  |  |  |  |
| 98 | Cf | californium |  |  |  |  |  |
| 99 | Es | einsteinium |  |  |  |  |  |
| 100 | Fm | fermium |  |  |  |  |  |
| 101 | Md | mendelevium |  |  |  |  |  |
| 102 | No | nobelium |  |  |  |  |  |
| 103 | Lr | lawrencium |  |  |  |  |  |
| 104 | Rf | rutherfordium |  |  |  |  |  |
| 105 | Db | dubnium |  |  |  |  |  |
| 106 | Sg | seaborgium |  |  |  |  |  |
| 107 | Bh | bohrium |  |  |  |  |  |
| 108 | Hs | hassium |  |  |  |  |  |
| 109 | Mt | meitnerium |  |  |  |  |  |
| 110 | Ds | darmstadtium |  |  |  |  |  |
| 111 | Rg | roentgenium |  |  |  |  |  |
| 112 | Cn | copernicium |  |  |  |  |  |
| 113 | Nh | nihonium |  |  |  |  |  |
| 114 | Fl | flerovium |  |  |  |  |  |
| 115 | Mc | moscovium |  |  |  |  |  |
| 116 | Lv | livermorium |  |  |  |  |  |
| 117 | Ts | tennessine |  |  |  |  |  |
| 118 | Og | oganesson |  |  |  |  |  |

## Values recommended since 1902

| Z | Symbol | Element | Year | Value | Report |
|--:|---|---|--:|--:|---|
| 1 | H | hydrogen | 2009 | [1.007 84, 1.008 11] | [doi:10.1351/PAC-REP-10-09-14](https://doi.org/10.1351/PAC-REP-10-09-14) |
| 1 | H | hydrogen | 1981 | 1.007 94(7) | [doi:10.1351/pac198355071101](https://doi.org/10.1351/pac198355071101) |
| 1 | H | hydrogen | 1971 | 1.0079(1) | [doi:10.1351/pac197230030637](https://doi.org/10.1351/pac197230030637) |
| 1 | H | hydrogen | 1969 | 1.0080(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 1 | H | hydrogen | 1961 | 1.007 97(1) | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 1 | H | hydrogen | 1940 | 1.0080 | [doi:10.1039/JR9400000475](https://doi.org/10.1039/JR9400000475) |
| 1 | H | hydrogen | 1938 | 1.0081 | [doi:10.1039/JR9380001101](https://doi.org/10.1039/JR9380001101) |
| 1 | H | hydrogen | 1931 | 1.0078 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 1 | H | hydrogen | 1903 | 1.008 | [doi:10.1021/ja02003a001](https://doi.org/10.1021/ja02003a001) |
| 1 | H | hydrogen | 1902 | 1.01 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 2 | He | helium | 1983 | 4.002 602(2) | [doi:10.1351/pac198456060653](https://doi.org/10.1351/pac198456060653) |
| 2 | He | helium | 1969 | 4.002 60(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 2 | He | helium | 1961 | 4.0026 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 2 | He | helium | 1938 | 4.003 | [doi:10.1039/JR9380001101](https://doi.org/10.1039/JR9380001101) |
| 2 | He | helium | 1931 | 4.002 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 2 | He | helium | 1916 | 4 | [doi:10.1021/ja02176a001](https://doi.org/10.1021/ja02176a001) |
| 2 | He | helium | 1911 | 3.99 | [doi:10.1021/ja01928a001](https://doi.org/10.1021/ja01928a001) |
| 2 | He | helium | 1902 | 4 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 3 | Li | lithium | 2009 | [6.938, 6.997] | [doi:10.1351/PAC-REP-10-09-14](https://doi.org/10.1351/PAC-REP-10-09-14) |
| 3 | Li | lithium | 1983 | 6.941(2) | [doi:10.1351/pac198456060653](https://doi.org/10.1351/pac198456060653) |
| 3 | Li | lithium | 1969 | 6.941(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 3 | Li | lithium | 1961 | 6.939 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 3 | Li | lithium | 1925 | 6.940 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 3 | Li | lithium | 1911 | 6.94 | [doi:10.1021/ja01928a001](https://doi.org/10.1021/ja01928a001) |
| 3 | Li | lithium | 1909 | 7 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 3 | Li | lithium | 1902 | 7.03 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 4 | Be | beryllium | 2013 | 9.012 1831(5) | [doi:10.1515/pac-2015-0305](https://doi.org/10.1515/pac-2015-0305) |
| 4 | Be | beryllium | 1985 | 9.012 182(3) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 4 | Be | beryllium | 1969 | 9.012 18(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 4 | Be | beryllium | 1961 | 9.0122 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 4 | Be | beryllium | 1949 | 9.013 | [doi:10.1039/JR9510000001](https://doi.org/10.1039/JR9510000001) |
| 4 | Be | beryllium | 1925 | 9.02 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 4 | Be | beryllium | 1902 | 9.1 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 5 | B | boron | 2009 | [10.806, 10.821] | [doi:10.1351/PAC-REP-10-09-14](https://doi.org/10.1351/PAC-REP-10-09-14) |
| 5 | B | boron | 1995 | 10.811(7) | [doi:10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) |
| 5 | B | boron | 1983 | 10.811(5) | [doi:10.1351/pac198456060653](https://doi.org/10.1351/pac198456060653) |
| 5 | B | boron | 1969 | 10.81(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 5 | B | boron | 1961 | 10.811(3) | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 5 | B | boron | 1925 | 10.82 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 5 | B | boron | 1920 | 10.9 | [doi:10.1021/ja02233a600](https://doi.org/10.1021/ja02233a600) |
| 5 | B | boron | 1902 | 11 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 6 | C | carbon | 2009 | [12.0096, 12.0116] | [doi:10.1351/PAC-REP-10-09-14](https://doi.org/10.1351/PAC-REP-10-09-14) |
| 6 | C | carbon | 1995 | 12.0107(8) | [doi:10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) |
| 6 | C | carbon | 1969 | 12.011(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 6 | C | carbon | 1961 | 12.011 15(5) | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 6 | C | carbon | 1953 | 12.011 | [doi:10.1039/JR9540004713](https://doi.org/10.1039/JR9540004713) |
| 6 | C | carbon | 1938 | 12.010 | [doi:10.1039/JR9380001101](https://doi.org/10.1039/JR9380001101) |
| 6 | C | carbon | 1937 | 12.01 | [doi:10.1039/JR9370001900](https://doi.org/10.1039/JR9370001900) |
| 6 | C | carbon | 1931 | 12 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 6 | C | carbon | 1925 | 12 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 6 | C | carbon | 1916 | 12.005 | [doi:10.1021/ja02176a001](https://doi.org/10.1021/ja02176a001) |
| 6 | C | carbon | 1902 | 12 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 7 | N | nitrogen | 2009 | [14.006 43, 14.007 28] | [doi:10.1351/PAC-REP-10-09-14](https://doi.org/10.1351/PAC-REP-10-09-14) |
| 7 | N | nitrogen | 1999 | 14.0067(2) | [doi:10.1351/pac200173040667](https://doi.org/10.1351/pac200173040667) |
| 7 | N | nitrogen | 1985 | 14.006 74(7) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 7 | N | nitrogen | 1969 | 14.0067(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 7 | N | nitrogen | 1961 | 14.0067 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 7 | N | nitrogen | 1920 | 14.008 | [doi:10.1021/ja02233a600](https://doi.org/10.1021/ja02233a600) |
| 7 | N | nitrogen | 1907 | 14.01 | [doi:10.1021/ja01956a001](https://doi.org/10.1021/ja01956a001) |
| 7 | N | nitrogen | 1902 | 14.04 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 8 | O | oxygen | 2009 | [15.999 03, 15.999 77] | [doi:10.1351/PAC-REP-10-09-14](https://doi.org/10.1351/PAC-REP-10-09-14) |
| 8 | O | oxygen | 1969 | 15.9994(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 8 | O | oxygen | 1961 | 15.9994(1) | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 8 | O | oxygen | 1902 | 16 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 9 | F | fluorine | 2021 | 18.998 403 162(5) | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 9 | F | fluorine | 2013 | 18.998 403 163(6) | [doi:10.1515/pac-2015-0305](https://doi.org/10.1515/pac-2015-0305) |
| 9 | F | fluorine | 1995 | 18.998 4032(5) | [doi:10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) |
| 9 | F | fluorine | 1985 | 18.998 4032(9) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 9 | F | fluorine | 1975 | 18.998 403(1) | [doi:10.1351/pac197647010075](https://doi.org/10.1351/pac197647010075) |
| 9 | F | fluorine | 1971 | 18.998 40(1) | [doi:10.1351/pac197230030637](https://doi.org/10.1351/pac197230030637) |
| 9 | F | fluorine | 1969 | 18.9984(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 9 | F | fluorine | 1961 | 18.9984 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 9 | F | fluorine | 1925 | 19 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 9 | F | fluorine | 1902 | 19 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 10 | Ne | neon | 1985 | 20.1797(6) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 10 | Ne | neon | 1979 | 20.179(1) | [doi:10.1351/pac198052102349](https://doi.org/10.1351/pac198052102349) |
| 10 | Ne | neon | 1967 | 20.179(3) | [doi:10.1351/pac196918040569](https://doi.org/10.1351/pac196918040569) |
| 10 | Ne | neon | 1931 | 20.183 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 10 | Ne | neon | 1911 | 20.2 | [doi:10.1021/ja01928a001](https://doi.org/10.1021/ja01928a001) |
| 10 | Ne | neon | 1909 | 20 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 10 | Ne | neon | 1902 | 20 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 11 | Na | sodium | 2005 | 22.989 769 28(2) | [doi:10.1351/pac200678112051](https://doi.org/10.1351/pac200678112051) |
| 11 | Na | sodium | 1995 | 22.989 770(2) | [doi:10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) |
| 11 | Na | sodium | 1985 | 22.989 768(6) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 11 | Na | sodium | 1971 | 22.989 77(1) | [doi:10.1351/pac197230030637](https://doi.org/10.1351/pac197230030637) |
| 11 | Na | sodium | 1969 | 22.9898(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 11 | Na | sodium | 1961 | 22.9898 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 11 | Na | sodium | 1953 | 22.991 | [doi:10.1039/JR9540004713](https://doi.org/10.1039/JR9540004713) |
| 11 | Na | sodium | 1925 | 22.997 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 11 | Na | sodium | 1909 | 23 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 11 | Na | sodium | 1902 | 23.05 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 12 | Mg | magnesium | 2011 | [24.304, 24.307] | [doi:10.1351/PAC-REP-13-03-02](https://doi.org/10.1351/PAC-REP-13-03-02) |
| 12 | Mg | magnesium | 1985 | 24.3050(6) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 12 | Mg | magnesium | 1969 | 24.305(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 12 | Mg | magnesium | 1967 | 24.305 | [doi:10.1351/pac196918040569](https://doi.org/10.1351/pac196918040569) |
| 12 | Mg | magnesium | 1961 | 24.312 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 12 | Mg | magnesium | 1909 | 24.32 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 12 | Mg | magnesium | 1902 | 24.36 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 13 | Al | aluminium | 2017 | 26.981 5384(3) | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 13 | Al | aluminium | 2013 | 26.981 5385(7) | [doi:10.1515/pac-2015-0305](https://doi.org/10.1515/pac-2015-0305) |
| 13 | Al | aluminium | 2005 | 26.981 5386(8) | [doi:10.1351/pac200678112051](https://doi.org/10.1351/pac200678112051) |
| 13 | Al | aluminium | 1995 | 26.981 538(2) | [doi:10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) |
| 13 | Al | aluminium | 1985 | 26.981 539(5) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 13 | Al | aluminium | 1971 | 26.981 54(1) | [doi:10.1351/pac197230030637](https://doi.org/10.1351/pac197230030637) |
| 13 | Al | aluminium | 1969 | 28.9815(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 13 | Al | aluminium | 1961 | 26.9815 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 13 | Al | aluminium | 1951 | 26.98 | [doi:10.1039/JR9530000001](https://doi.org/10.1039/JR9530000001) |
| 13 | Al | aluminium | 1925 | 26.97 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 13 | Al | aluminium | 1922 | 27 | [doi:10.1021/ja01441a001](https://doi.org/10.1021/ja01441a001) |
| 13 | Al | aluminium | 1902 | 27.1 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 14 | Si | silicon | 2009 | [28.084, 28.086] | [doi:10.1351/PAC-REP-10-09-14](https://doi.org/10.1351/PAC-REP-10-09-14) |
| 14 | Si | silicon | 1975 | 28.0855(3) | [doi:10.1351/pac197647010075](https://doi.org/10.1351/pac197647010075) |
| 14 | Si | silicon | 1969 | 28.086(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 14 | Si | silicon | 1961 | 28.086(1) | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 14 | Si | silicon | 1951 | 28.09 | [doi:10.1039/JR9530000001](https://doi.org/10.1039/JR9530000001) |
| 14 | Si | silicon | 1925 | 28.06 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 14 | Si | silicon | 1922 | 28.1 | [doi:10.1021/ja01441a001](https://doi.org/10.1021/ja01441a001) |
| 14 | Si | silicon | 1909 | 28.3 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 14 | Si | silicon | 1902 | 28.4 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 15 | P | phosphorus | 2013 | 30.973 761 998(5) | [doi:10.1515/pac-2015-0305](https://doi.org/10.1515/pac-2015-0305) |
| 15 | P | phosphorus | 2005 | 30.973 762(2) | [doi:10.1351/pac200678112051](https://doi.org/10.1351/pac200678112051) |
| 15 | P | phosphorus | 1995 | 30.973 761(2) | [doi:10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) |
| 15 | P | phosphorus | 1985 | 30.973 762(4) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 15 | P | phosphorus | 1971 | 30.973 76(1) | [doi:10.1351/pac197230030637](https://doi.org/10.1351/pac197230030637) |
| 15 | P | phosphorus | 1969 | 30.9738(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 15 | P | phosphorus | 1961 | 30.9738 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 15 | P | phosphorus | 1951 | 30.975 | [doi:10.1039/JR9530000001](https://doi.org/10.1039/JR9530000001) |
| 15 | P | phosphorus | 1939 | 30.98 | [doi:10.1039/JR9390000351](https://doi.org/10.1039/JR9390000351) |
| 15 | P | phosphorus | 1931 | 31.02 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 15 | P | phosphorus | 1925 | 31.027 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 15 | P | phosphorus | 1911 | 31.04 | [doi:10.1021/ja01928a001](https://doi.org/10.1021/ja01928a001) |
| 15 | P | phosphorus | 1902 | 31 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 16 | S | sulfur | 2009 | [32.059, 32.076] | [doi:10.1351/PAC-REP-10-09-14](https://doi.org/10.1351/PAC-REP-10-09-14) |
| 16 | S | sulfur | 1999 | 32.065(5) | [doi:10.1351/pac200173040667](https://doi.org/10.1351/pac200173040667) |
| 16 | S | sulfur | 1983 | 32.066(6) | [doi:10.1351/pac198456060653](https://doi.org/10.1351/pac198456060653) |
| 16 | S | sulfur | 1969 | 32.06(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 16 | S | sulfur | 1961 | 32.064(3) | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 16 | S | sulfur | 1951 | 32.066(3) | [doi:10.1039/JR9530000001](https://doi.org/10.1039/JR9530000001) |
| 16 | S | sulfur | 1947 | 32.066 | [doi:10.1039/JR9510000001](https://doi.org/10.1039/JR9510000001) |
| 16 | S | sulfur | 1931 | 32.06 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 16 | S | sulfur | 1925 | 32.064 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 16 | S | sulfur | 1916 | 32.06 | [doi:10.1021/ja02176a001](https://doi.org/10.1021/ja02176a001) |
| 16 | S | sulfur | 1909 | 32.07 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 16 | S | sulfur | 1902 | 32.06 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 17 | Cl | chlorine | 2009 | [35.446, 35.457] | [doi:10.1351/PAC-REP-10-09-14](https://doi.org/10.1351/PAC-REP-10-09-14) |
| 17 | Cl | chlorine | 1999 | 35.453(2) | [doi:10.1351/pac200173040667](https://doi.org/10.1351/pac200173040667) |
| 17 | Cl | chlorine | 1985 | 35.4527(9) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 17 | Cl | chlorine | 1961 | 35.453(1) | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 17 | Cl | chlorine | 1925 | 35.457 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 17 | Cl | chlorine | 1909 | 35.46 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 17 | Cl | chlorine | 1902 | 35.45 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 18 | Ar | argon | 2017 | [39.792, 39.963] | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 18 | Ar | argon | 1979 | 39.948(1) | [doi:10.1351/pac198052102349](https://doi.org/10.1351/pac198052102349) |
| 18 | Ar | argon | 1969 | 39.948(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 18 | Ar | argon | 1961 | 39.948 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 18 | Ar | argon | 1931 | 39.944 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 18 | Ar | argon | 1925 | 39.91 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 18 | Ar | argon | 1920 | 39.9 | [doi:10.1021/ja02233a600](https://doi.org/10.1021/ja02233a600) |
| 18 | Ar | argon | 1911 | 39.88 | [doi:10.1021/ja01928a001](https://doi.org/10.1021/ja01928a001) |
| 18 | Ar | argon | 1902 | 39.9 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 19 | K | potassium | 1979 | 39.0983(1) | [doi:10.1351/pac198052102349](https://doi.org/10.1351/pac198052102349) |
| 19 | K | potassium | 1975 | 39.0983(3) | [doi:10.1351/pac197647010075](https://doi.org/10.1351/pac197647010075) |
| 19 | K | potassium | 1971 | 39.098(3) | [doi:10.1351/pac197230030637](https://doi.org/10.1351/pac197230030637) |
| 19 | K | potassium | 1969 | 39.102(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 19 | K | potassium | 1961 | 39.102 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 19 | K | potassium | 1951 | 39.100 | [doi:10.1039/JR9530000001](https://doi.org/10.1039/JR9530000001) |
| 19 | K | potassium | 1934 | 39.096 | [doi:10.1039/JR9340000499](https://doi.org/10.1039/JR9340000499) |
| 19 | K | potassium | 1931 | 39.10 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 19 | K | potassium | 1925 | 39.096 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 19 | K | potassium | 1909 | 39.10 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 19 | K | potassium | 1902 | 39.15 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 20 | Ca | calcium | 1983 | 40.078(4) | [doi:10.1351/pac198456060653](https://doi.org/10.1351/pac198456060653) |
| 20 | Ca | calcium | 1969 | 40.08(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 20 | Ca | calcium | 1931 | 40.08 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 20 | Ca | calcium | 1912 | 40.07 | [doi:10.1021/ja02224a601](https://doi.org/10.1021/ja02224a601) |
| 20 | Ca | calcium | 1909 | 40.09 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 20 | Ca | calcium | 1902 | 40.1 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 21 | Sc | scandium | 2021 | 44.955 907(4) | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 21 | Sc | scandium | 2013 | 44.955 908(5) | [doi:10.1515/pac-2015-0305](https://doi.org/10.1515/pac-2015-0305) |
| 21 | Sc | scandium | 2005 | 44.955 912(6) | [doi:10.1351/pac200678112051](https://doi.org/10.1351/pac200678112051) |
| 21 | Sc | scandium | 1995 | 44.955 910(8) | [doi:10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) |
| 21 | Sc | scandium | 1985 | 44.955 910(9) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 21 | Sc | scandium | 1983 | 44.955 91(1) | [doi:10.1351/pac198456060653](https://doi.org/10.1351/pac198456060653) |
| 21 | Sc | scandium | 1969 | 44.9559(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 21 | Sc | scandium | 1961 | 44.956 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 21 | Sc | scandium | 1951 | 44.96 | [doi:10.1039/JR9530000001](https://doi.org/10.1039/JR9530000001) |
| 21 | Sc | scandium | 1925 | 45.10 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 21 | Sc | scandium | 1921 | 45.1 | [doi:10.1021/ja01454a600](https://doi.org/10.1021/ja01454a600) |
| 21 | Sc | scandium | 1902 | 44.1 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 22 | Ti | titanium | 1993 | 47.867(1) | [doi:10.1351/pac199466122423](https://doi.org/10.1351/pac199466122423) |
| 22 | Ti | titanium | 1979 | 47.88(3) | [doi:10.1351/pac198052102349](https://doi.org/10.1351/pac198052102349) |
| 22 | Ti | titanium | 1969 | 47.90(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 22 | Ti | titanium | 1931 | 47.90 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 22 | Ti | titanium | 1902 | 48.1 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 23 | V | vanadium | 1977 | 50.9415(1) | [doi:10.1351/pac197951020405](https://doi.org/10.1351/pac197951020405) |
| 23 | V | vanadium | 1969 | 50.9414(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 23 | V | vanadium | 1961 | 50.942 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 23 | V | vanadium | 1931 | 50.95 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 23 | V | vanadium | 1925 | 50.96 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 23 | V | vanadium | 1912 | 51 | [doi:10.1021/ja02224a601](https://doi.org/10.1021/ja02224a601) |
| 23 | V | vanadium | 1911 | 51.06 | [doi:10.1021/ja01928a001](https://doi.org/10.1021/ja01928a001) |
| 23 | V | vanadium | 1902 | 51.2 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 24 | Cr | chromium | 1983 | 51.9961(6) | [doi:10.1351/pac198456060653](https://doi.org/10.1351/pac198456060653) |
| 24 | Cr | chromium | 1969 | 51.996(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 24 | Cr | chromium | 1967 | 51.996 | [doi:10.1351/pac196918040569](https://doi.org/10.1351/pac196918040569) |
| 24 | Cr | chromium | 1961 | 51.996(1) | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 24 | Cr | chromium | 1925 | 52.01 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 24 | Cr | chromium | 1910 | 52 | [doi:10.1021/ja01919a001](https://doi.org/10.1021/ja01919a001) |
| 24 | Cr | chromium | 1902 | 52.1 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 25 | Mn | manganese | 2017 | 54.938 043(2) | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 25 | Mn | manganese | 2013 | 54.938 044(3) | [doi:10.1515/pac-2015-0305](https://doi.org/10.1515/pac-2015-0305) |
| 25 | Mn | manganese | 2005 | 54.938 045(5) | [doi:10.1351/pac200678112051](https://doi.org/10.1351/pac200678112051) |
| 25 | Mn | manganese | 1995 | 54.938 049(9) | [doi:10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) |
| 25 | Mn | manganese | 1985 | 54.938 05(1) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 25 | Mn | manganese | 1969 | 54.9380(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 25 | Mn | manganese | 1961 | 54.9380 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 25 | Mn | manganese | 1953 | 54.94 | [doi:10.1039/JR9540004713](https://doi.org/10.1039/JR9540004713) |
| 25 | Mn | manganese | 1909 | 54.93 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 25 | Mn | manganese | 1902 | 55 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 26 | Fe | iron | 1993 | 55.845(2) | [doi:10.1351/pac199466122423](https://doi.org/10.1351/pac199466122423) |
| 26 | Fe | iron | 1961 | 55.847(3) | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 26 | Fe | iron | 1940 | 55.85 | [doi:10.1039/JR9400000475](https://doi.org/10.1039/JR9400000475) |
| 26 | Fe | iron | 1912 | 55.84 | [doi:10.1021/ja02224a601](https://doi.org/10.1021/ja02224a601) |
| 26 | Fe | iron | 1909 | 55.85 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 26 | Fe | iron | 1902 | 55.9 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 27 | Co | cobalt | 2017 | 58.933 194(3) | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 27 | Co | cobalt | 2013 | 58.933 194(4) | [doi:10.1515/pac-2015-0305](https://doi.org/10.1515/pac-2015-0305) |
| 27 | Co | cobalt | 2005 | 58.933 195(5) | [doi:10.1351/pac200678112051](https://doi.org/10.1351/pac200678112051) |
| 27 | Co | cobalt | 1995 | 58.933 200(9) | [doi:10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) |
| 27 | Co | cobalt | 1985 | 58.933 20(1) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 27 | Co | cobalt | 1969 | 58.9332(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 27 | Co | cobalt | 1961 | 58.9332 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 27 | Co | cobalt | 1925 | 58.94 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 27 | Co | cobalt | 1909 | 58.97 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 27 | Co | cobalt | 1902 | 59 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 28 | Ni | nickel | 2007 | 58.6934(4) | [doi:10.1351/PAC-REP-09-08-03](https://doi.org/10.1351/PAC-REP-09-08-03) |
| 28 | Ni | nickel | 1989 | 58.6934(2) | [doi:10.1351/pac199163070975](https://doi.org/10.1351/pac199163070975) |
| 28 | Ni | nickel | 1979 | 58.69(1) | [doi:10.1351/pac198052102349](https://doi.org/10.1351/pac198052102349) |
| 28 | Ni | nickel | 1973 | 58.70(1) | [doi:10.1351/pac197437040589](https://doi.org/10.1351/pac197437040589) |
| 28 | Ni | nickel | 1969 | 58.71(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 28 | Ni | nickel | 1955 | 58.71 | [doi:10.1021/ja01595a001](https://doi.org/10.1021/ja01595a001) |
| 28 | Ni | nickel | 1925 | 58.69 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 28 | Ni | nickel | 1909 | 58.68 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 28 | Ni | nickel | 1902 | 58.7 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 29 | Cu | copper | 1969 | 63.546(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 29 | Cu | copper | 1965 | 63.546(1) | [doi:10.1351/pac196918040569](https://doi.org/10.1351/pac196918040569) |
| 29 | Cu | copper | 1947 | 63.54 | [doi:10.1039/JR9510000001](https://doi.org/10.1039/JR9510000001) |
| 29 | Cu | copper | 1909 | 63.57 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 29 | Cu | copper | 1902 | 63.6 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 30 | Zn | zinc | 2007 | 65.38(2) | [doi:10.1351/PAC-REP-09-08-03](https://doi.org/10.1351/PAC-REP-09-08-03) |
| 30 | Zn | zinc | 2001 | 65.409(4) | [doi:10.1351/pac200375081107](https://doi.org/10.1351/pac200375081107) |
| 30 | Zn | zinc | 1983 | 65.39(2) | [doi:10.1351/pac198456060653](https://doi.org/10.1351/pac198456060653) |
| 30 | Zn | zinc | 1971 | 65.38(1) | [doi:10.1351/pac197230030637](https://doi.org/10.1351/pac197230030637) |
| 30 | Zn | zinc | 1969 | 65.37(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 30 | Zn | zinc | 1961 | 65.37 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 30 | Zn | zinc | 1925 | 65.38 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 30 | Zn | zinc | 1909 | 65.37 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 30 | Zn | zinc | 1902 | 65.4 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 31 | Ga | gallium | 1987 | 69.723(1) | [doi:10.1351/pac198860060841](https://doi.org/10.1351/pac198860060841) |
| 31 | Ga | gallium | 1983 | 69.723(4) | [doi:10.1351/pac198456060653](https://doi.org/10.1351/pac198456060653) |
| 31 | Ga | gallium | 1969 | 69.72(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 31 | Ga | gallium | 1925 | 69.72 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 31 | Ga | gallium | 1920 | 70.1 | [doi:10.1021/ja02233a600](https://doi.org/10.1021/ja02233a600) |
| 31 | Ga | gallium | 1909 | 69.9 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 31 | Ga | gallium | 1902 | 70 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 32 | Ge | germanium | 2011 | 72.630(8) | [doi:10.1351/PAC-REP-13-03-02](https://doi.org/10.1351/PAC-REP-13-03-02) |
| 32 | Ge | germanium | 2009 | 72.63(1) | [doi:10.1351/PAC-REP-10-09-14](https://doi.org/10.1351/PAC-REP-10-09-14) |
| 32 | Ge | germanium | 1999 | 72.64(1) | [doi:10.1351/pac200173040667](https://doi.org/10.1351/pac200173040667) |
| 32 | Ge | germanium | 1985 | 72.61(2) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 32 | Ge | germanium | 1969 | 72.59(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 32 | Ge | germanium | 1961 | 72.59 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 32 | Ge | germanium | 1925 | 72.60 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 32 | Ge | germanium | 1903 | 72.5 | [doi:10.1021/ja02003a001](https://doi.org/10.1021/ja02003a001) |
| 32 | Ge | germanium | 1902 | 72 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 33 | As | arsenic | 2013 | 74.921 595(6) | [doi:10.1515/pac-2015-0305](https://doi.org/10.1515/pac-2015-0305) |
| 33 | As | arsenic | 1995 | 74.921 60(2) | [doi:10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) |
| 33 | As | arsenic | 1985 | 74.921 59(2) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 33 | As | arsenic | 1969 | 74.9216(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 33 | As | arsenic | 1961 | 74.9216 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 33 | As | arsenic | 1934 | 74.91 | [doi:10.1039/JR9340000499](https://doi.org/10.1039/JR9340000499) |
| 33 | As | arsenic | 1931 | 74.93 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 33 | As | arsenic | 1910 | 74.96 | [doi:10.1021/ja01919a001](https://doi.org/10.1021/ja01919a001) |
| 33 | As | arsenic | 1902 | 75 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 34 | Se | selenium | 2013 | 78.971(8) | [doi:10.1515/pac-2015-0305](https://doi.org/10.1515/pac-2015-0305) |
| 34 | Se | selenium | 1969 | 78.96(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 34 | Se | selenium | 1934 | 78.96 | [doi:10.1039/JR9340000499](https://doi.org/10.1039/JR9340000499) |
| 34 | Se | selenium | 1903 | 79.2 | [doi:10.1021/ja02003a001](https://doi.org/10.1021/ja02003a001) |
| 34 | Se | selenium | 1902 | 79.1 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 35 | Br | bromine | 2011 | [79.901, 79.907] | [doi:10.1351/PAC-REP-13-03-02](https://doi.org/10.1351/PAC-REP-13-03-02) |
| 35 | Br | bromine | 1965 | 79.904(1) | [doi:10.1351/pac196918040569](https://doi.org/10.1351/pac196918040569) |
| 35 | Br | bromine | 1961 | 79.909(2) | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 35 | Br | bromine | 1925 | 79.916 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 35 | Br | bromine | 1909 | 79.92 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 35 | Br | bromine | 1902 | 79.96 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 36 | Kr | krypton | 2001 | 83.798(2) | [doi:10.1351/pac200375081107](https://doi.org/10.1351/pac200375081107) |
| 36 | Kr | krypton | 1969 | 83.80(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 36 | Kr | krypton | 1951 | 83.80 | [doi:10.1039/JR9530000001](https://doi.org/10.1039/JR9530000001) |
| 36 | Kr | krypton | 1932 | 83.7 | [doi:10.1021/ja01343a001](https://doi.org/10.1021/ja01343a001) |
| 36 | Kr | krypton | 1925 | 82.9 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 36 | Kr | krypton | 1911 | 82.92 | [doi:10.1021/ja01928a001](https://doi.org/10.1021/ja01928a001) |
| 36 | Kr | krypton | 1910 | 83 | [doi:10.1021/ja01919a001](https://doi.org/10.1021/ja01919a001) |
| 36 | Kr | krypton | 1902 | 81.8 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 37 | Rb | rubidium | 1969 | 85.4678(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 37 | Rb | rubidium | 1961 | 85.47 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 37 | Rb | rubidium | 1937 | 85.48 | [doi:10.1039/JR9370001900](https://doi.org/10.1039/JR9370001900) |
| 37 | Rb | rubidium | 1925 | 85.44 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 37 | Rb | rubidium | 1909 | 85.45 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 37 | Rb | rubidium | 1905 | 85.5 | [doi:10.1021/ja01979a001](https://doi.org/10.1021/ja01979a001) |
| 37 | Rb | rubidium | 1902 | 85.4 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 38 | Sr | strontium | 1969 | 87.62(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 38 | Sr | strontium | 1961 | 87.62 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 38 | Sr | strontium | 1911 | 87.63 | [doi:10.1021/ja01928a001](https://doi.org/10.1021/ja01928a001) |
| 38 | Sr | strontium | 1909 | 87.62 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 38 | Sr | strontium | 1902 | 87.6 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 39 | Y | yttrium | 2021 | 88.905 838(2) | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 39 | Y | yttrium | 2017 | 88.905 84(1) | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 39 | Y | yttrium | 2013 | 88.905 84(2) | [doi:10.1515/pac-2015-0305](https://doi.org/10.1515/pac-2015-0305) |
| 39 | Y | yttrium | 1985 | 88.905 85(2) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 39 | Y | yttrium | 1969 | 88.9059(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 39 | Y | yttrium | 1961 | 88.905 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 39 | Y | yttrium | 1931 | 88.92 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 39 | Y | yttrium | 1925 | 88.9 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 39 | Y | yttrium | 1920 | 89.33 | [doi:10.1021/ja02233a600](https://doi.org/10.1021/ja02233a600) |
| 39 | Y | yttrium | 1903 | 89 | [doi:10.1021/ja02003a001](https://doi.org/10.1021/ja02003a001) |
| 39 | Y | yttrium | 1902 | 89 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 40 | Zr | zirconium | 2024 | 91.222(3) |  |
| 40 | Zr | zirconium | 1983 | 91.224(2) | [doi:10.1351/pac198456060653](https://doi.org/10.1351/pac198456060653) |
| 40 | Zr | zirconium | 1969 | 91.22(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 40 | Zr | zirconium | 1931 | 91.22 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 40 | Zr | zirconium | 1925 | 91 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 40 | Zr | zirconium | 1903 | 90.6 | [doi:10.1021/ja02003a001](https://doi.org/10.1021/ja02003a001) |
| 40 | Zr | zirconium | 1902 | 90.7 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 41 | Nb | niobium | 2017 | 92.906 37(1) | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 41 | Nb | niobium | 2013 | 92.906 37(2) | [doi:10.1515/pac-2015-0305](https://doi.org/10.1515/pac-2015-0305) |
| 41 | Nb | niobium | 1985 | 92.906 38(2) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 41 | Nb | niobium | 1969 | 92.9064(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 41 | Nb | niobium | 1961 | 92.906 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 41 | Nb | niobium | 1935 | 92.91 | [doi:10.1039/JR9350000788](https://doi.org/10.1039/JR9350000788) |
| 41 | Nb | niobium | 1931 | 93.3 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 41 | Nb | niobium | 1917 | 93.1 | [doi:10.1021/ja02268a001](https://doi.org/10.1021/ja02268a001) |
| 41 | Nb | niobium | 1909 | 93.5 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 41 | Nb | niobium | 1902 | 94 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 42 | Mo | molybdenum | 2013 | 95.95(1) | [doi:10.1515/pac-2015-0305](https://doi.org/10.1515/pac-2015-0305) |
| 42 | Mo | molybdenum | 2007 | 95.96(2) | [doi:10.1351/PAC-REP-09-08-03](https://doi.org/10.1351/PAC-REP-09-08-03) |
| 42 | Mo | molybdenum | 2001 | 95.94(2) | [doi:10.1351/pac200375081107](https://doi.org/10.1351/pac200375081107) |
| 42 | Mo | molybdenum | 1975 | 95.94(1) | [doi:10.1351/pac197647010075](https://doi.org/10.1351/pac197647010075) |
| 42 | Mo | molybdenum | 1969 | 95.94(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 42 | Mo | molybdenum | 1961 | 95.94 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 42 | Mo | molybdenum | 1938 | 95.95 | [doi:10.1039/JR9380001101](https://doi.org/10.1039/JR9380001101) |
| 42 | Mo | molybdenum | 1902 | 96 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 44 | Ru | ruthenium | 1983 | 101.07(2) | [doi:10.1351/pac198456060653](https://doi.org/10.1351/pac198456060653) |
| 44 | Ru | ruthenium | 1969 | 101.07(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 44 | Ru | ruthenium | 1961 | 101.07 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 44 | Ru | ruthenium | 1953 | 101.1 | [doi:10.1039/JR9540004713](https://doi.org/10.1039/JR9540004713) |
| 44 | Ru | ruthenium | 1902 | 101.7 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 45 | Rh | rhodium | 2017 | 102.905 49(2) | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 45 | Rh | rhodium | 1995 | 102.905 50(2) | [doi:10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) |
| 45 | Rh | rhodium | 1985 | 102.905 50(3) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 45 | Rh | rhodium | 1969 | 102.9055(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 45 | Rh | rhodium | 1961 | 102.905 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 45 | Rh | rhodium | 1925 | 102.91 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 45 | Rh | rhodium | 1909 | 102.9 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 45 | Rh | rhodium | 1902 | 103 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 46 | Pd | palladium | 1979 | 106.42(1) | [doi:10.1351/pac198052102349](https://doi.org/10.1351/pac198052102349) |
| 46 | Pd | palladium | 1969 | 106.4(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 46 | Pd | palladium | 1955 | 106.4 | [doi:10.1021/ja01595a001](https://doi.org/10.1021/ja01595a001) |
| 46 | Pd | palladium | 1909 | 106.7 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 46 | Pd | palladium | 1903 | 106.5 | [doi:10.1021/ja02003a001](https://doi.org/10.1021/ja02003a001) |
| 46 | Pd | palladium | 1902 | 106 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 47 | Ag | silver | 1985 | 107.8682(2) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 47 | Ag | silver | 1981 | 107.8682(3) | [doi:10.1351/pac198355071101](https://doi.org/10.1351/pac198355071101) |
| 47 | Ag | silver | 1965 | 107.868(1) | [doi:10.1351/pac196918040569](https://doi.org/10.1351/pac196918040569) |
| 47 | Ag | silver | 1961 | 107.870(3) | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 47 | Ag | silver | 1925 | 107.880 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 47 | Ag | silver | 1909 | 107.88 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 47 | Ag | silver | 1902 | 107.93 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 48 | Cd | cadmium | 2013 | 112.414(4) | [doi:10.1515/pac-2015-0305](https://doi.org/10.1515/pac-2015-0305) |
| 48 | Cd | cadmium | 1985 | 112.411(8) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 48 | Cd | cadmium | 1975 | 112.41(1) | [doi:10.1351/pac197647010075](https://doi.org/10.1351/pac197647010075) |
| 48 | Cd | cadmium | 1969 | 112.40(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 48 | Cd | cadmium | 1961 | 112.40 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 48 | Cd | cadmium | 1925 | 112.41 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 48 | Cd | cadmium | 1909 | 112.40 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 48 | Cd | cadmium | 1902 | 112.4 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 49 | In | indium | 2011 | 114.818(1) | [doi:10.1351/PAC-REP-13-03-02](https://doi.org/10.1351/PAC-REP-13-03-02) |
| 49 | In | indium | 1991 | 114.818(3) | [doi:10.1351/pac199264101519](https://doi.org/10.1351/pac199264101519) |
| 49 | In | indium | 1969 | 114.82(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 49 | In | indium | 1955 | 114.82 | [doi:10.1021/ja01595a001](https://doi.org/10.1021/ja01595a001) |
| 49 | In | indium | 1934 | 114.76 | [doi:10.1039/JR9340000499](https://doi.org/10.1039/JR9340000499) |
| 49 | In | indium | 1909 | 114.8 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 49 | In | indium | 1905 | 115 | [doi:10.1021/ja01979a001](https://doi.org/10.1021/ja01979a001) |
| 49 | In | indium | 1902 | 114 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 50 | Sn | tin | 1983 | 118.710(7) | [doi:10.1351/pac198456060653](https://doi.org/10.1351/pac198456060653) |
| 50 | Sn | tin | 1969 | 118.69(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 50 | Sn | tin | 1961 | 118.69 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 50 | Sn | tin | 1925 | 118.70 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 50 | Sn | tin | 1916 | 118.7 | [doi:10.1021/ja02176a001](https://doi.org/10.1021/ja02176a001) |
| 50 | Sn | tin | 1903 | 119 | [doi:10.1021/ja02003a001](https://doi.org/10.1021/ja02003a001) |
| 50 | Sn | tin | 1902 | 118.5 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 51 | Sb | antimony | 1993 | 121.760(1) | [doi:10.1351/pac199466122423](https://doi.org/10.1351/pac199466122423) |
| 51 | Sb | antimony | 1989 | 121.757(3) | [doi:10.1351/pac199163070975](https://doi.org/10.1351/pac199163070975) |
| 51 | Sb | antimony | 1969 | 121.75(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 51 | Sb | antimony | 1961 | 121.75 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 51 | Sb | antimony | 1931 | 121.76 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 51 | Sb | antimony | 1925 | 121.77 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 51 | Sb | antimony | 1903 | 120.2 | [doi:10.1021/ja02003a001](https://doi.org/10.1021/ja02003a001) |
| 51 | Sb | antimony | 1902 | 120 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 52 | Te | tellurium | 1969 | 127.60(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 52 | Te | tellurium | 1961 | 127.60 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 52 | Te | tellurium | 1934 | 127.61 | [doi:10.1039/JR9340000499](https://doi.org/10.1039/JR9340000499) |
| 52 | Te | tellurium | 1909 | 127.5 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 52 | Te | tellurium | 1902 | 127.6 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 53 | I | iodine | 1985 | 126.904 47(3) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 53 | I | iodine | 1969 | 126.9045(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 53 | I | iodine | 1961 | 126.9044 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 53 | I | iodine | 1951 | 126.91 | [doi:10.1039/JR9530000001](https://doi.org/10.1039/JR9530000001) |
| 53 | I | iodine | 1933 | 126.92 | [doi:10.1039/JR9330000354](https://doi.org/10.1039/JR9330000354) |
| 53 | I | iodine | 1925 | 126.932 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 53 | I | iodine | 1909 | 126.92 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 53 | I | iodine | 1905 | 126.97 | [doi:10.1021/ja01979a001](https://doi.org/10.1021/ja01979a001) |
| 53 | I | iodine | 1902 | 126.85 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 54 | Xe | xenon | 1999 | 131.293(6) | [doi:10.1351/pac200173040667](https://doi.org/10.1351/pac200173040667) |
| 54 | Xe | xenon | 1985 | 131.29(2) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 54 | Xe | xenon | 1979 | 131.29(3) | [doi:10.1351/pac198052102349](https://doi.org/10.1351/pac198052102349) |
| 54 | Xe | xenon | 1969 | 131.30(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 54 | Xe | xenon | 1955 | 131.30 | [doi:10.1021/ja01595a001](https://doi.org/10.1021/ja01595a001) |
| 54 | Xe | xenon | 1932 | 131.3 | [doi:10.1021/ja01343a001](https://doi.org/10.1021/ja01343a001) |
| 54 | Xe | xenon | 1911 | 130.2 | [doi:10.1021/ja01928a001](https://doi.org/10.1021/ja01928a001) |
| 54 | Xe | xenon | 1910 | 130.7 | [doi:10.1021/ja01919a001](https://doi.org/10.1021/ja01919a001) |
| 54 | Xe | xenon | 1909 | 128 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 54 | Xe | xenon | 1902 | 128 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 55 | Cs | caesium | 2013 | 132.905 451 96(6) | [doi:10.1515/pac-2015-0305](https://doi.org/10.1515/pac-2015-0305) |
| 55 | Cs | caesium | 2005 | 132.905 4519(2) | [doi:10.1351/pac200678112051](https://doi.org/10.1351/pac200678112051) |
| 55 | Cs | caesium | 1995 | 132.905 45(2) | [doi:10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) |
| 55 | Cs | caesium | 1985 | 132.905 43(5) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 55 | Cs | caesium | 1971 | 132.9054(1) | [doi:10.1351/pac197230030637](https://doi.org/10.1351/pac197230030637) |
| 55 | Cs | caesium | 1969 | 132.9055(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 55 | Cs | caesium | 1961 | 132.905 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 55 | Cs | caesium | 1934 | 132.91 | [doi:10.1039/JR9340000499](https://doi.org/10.1039/JR9340000499) |
| 55 | Cs | caesium | 1909 | 132.81 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 55 | Cs | caesium | 1904 | 132.9 | [doi:10.1021/ja01991a001](https://doi.org/10.1021/ja01991a001) |
| 55 | Cs | caesium | 1902 | 133 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 56 | Ba | barium | 1985 | 137.327(7) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 56 | Ba | barium | 1975 | 137.33(1) | [doi:10.1351/pac197647010075](https://doi.org/10.1351/pac197647010075) |
| 56 | Ba | barium | 1969 | 137.34(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 56 | Ba | barium | 1961 | 137.34 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 56 | Ba | barium | 1931 | 137.36 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 56 | Ba | barium | 1909 | 137.37 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 56 | Ba | barium | 1902 | 137.4 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 57 | La | lanthanum | 2005 | 138.905 47(7) | [doi:10.1351/pac200678112051](https://doi.org/10.1351/pac200678112051) |
| 57 | La | lanthanum | 1985 | 138.9055(2) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 57 | La | lanthanum | 1969 | 138.9055(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 57 | La | lanthanum | 1961 | 138.91 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 57 | La | lanthanum | 1933 | 138.92 | [doi:10.1039/JR9330000354](https://doi.org/10.1039/JR9330000354) |
| 57 | La | lanthanum | 1925 | 138.90 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 57 | La | lanthanum | 1909 | 139 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 57 | La | lanthanum | 1903 | 138.9 | [doi:10.1021/ja02003a001](https://doi.org/10.1021/ja02003a001) |
| 57 | La | lanthanum | 1902 | 138 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 58 | Ce | cerium | 1995 | 140.116(1) | [doi:10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) |
| 58 | Ce | cerium | 1985 | 140.115(4) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 58 | Ce | cerium | 1969 | 140.12(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 58 | Ce | cerium | 1961 | 140.12 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 58 | Ce | cerium | 1931 | 140.13 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 58 | Ce | cerium | 1904 | 140.25 | [doi:10.1021/ja01991a001](https://doi.org/10.1021/ja01991a001) |
| 58 | Ce | cerium | 1902 | 140 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 59 | Pr | praseodymium | 2017 | 140.907 66(1) | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 59 | Pr | praseodymium | 2013 | 140.907 66(2) | [doi:10.1515/pac-2015-0305](https://doi.org/10.1515/pac-2015-0305) |
| 59 | Pr | praseodymium | 1995 | 140.907 65(2) | [doi:10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) |
| 59 | Pr | praseodymium | 1985 | 140.907 65(3) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 59 | Pr | praseodymium | 1969 | 140.9077(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 59 | Pr | praseodymium | 1961 | 140.907 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 59 | Pr | praseodymium | 1925 | 140.92 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 59 | Pr | praseodymium | 1916 | 140.9 | [doi:10.1021/ja02176a001](https://doi.org/10.1021/ja02176a001) |
| 59 | Pr | praseodymium | 1902 | 140.6 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 60 | Nd | neodymium | 2005 | 144.242(3) | [doi:10.1351/pac200678112051](https://doi.org/10.1351/pac200678112051) |
| 60 | Nd | neodymium | 1969 | 144.24(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 60 | Nd | neodymium | 1961 | 144.24 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 60 | Nd | neodymium | 1925 | 144.27 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 60 | Nd | neodymium | 1909 | 144.3 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 60 | Nd | neodymium | 1902 | 143.6 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 62 | Sm | samarium | 2005 | 150.36(2) | [doi:10.1351/pac200678112051](https://doi.org/10.1351/pac200678112051) |
| 62 | Sm | samarium | 1979 | 150.36(3) | [doi:10.1351/pac198052102349](https://doi.org/10.1351/pac198052102349) |
| 62 | Sm | samarium | 1969 | 150.4(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 62 | Sm | samarium | 1955 | 150.35 | [doi:10.1021/ja01595a001](https://doi.org/10.1021/ja01595a001) |
| 62 | Sm | samarium | 1925 | 150.43 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 62 | Sm | samarium | 1909 | 150.4 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 62 | Sm | samarium | 1905 | 150.3 | [doi:10.1021/ja01979a001](https://doi.org/10.1021/ja01979a001) |
| 62 | Sm | samarium | 1902 | 150 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 63 | Eu | europium | 1995 | 151.964(1) | [doi:10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) |
| 63 | Eu | europium | 1985 | 151.965(9) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 63 | Eu | europium | 1969 | 151.96(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 63 | Eu | europium | 1961 | 151.96 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 63 | Eu | europium | 1909 | 152 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 63 | Eu | europium | 1902 | 152 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 64 | Gd | gadolinium | 2024 | 157.249(2) |  |
| 64 | Gd | gadolinium | 1969 | 157.25(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 64 | Gd | gadolinium | 1961 | 157.25 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 64 | Gd | gadolinium | 1955 | 157.26 | [doi:10.1021/ja01595a001](https://doi.org/10.1021/ja01595a001) |
| 64 | Gd | gadolinium | 1937 | 156.9 | [doi:10.1039/JR9370001900](https://doi.org/10.1039/JR9370001900) |
| 64 | Gd | gadolinium | 1931 | 157.3 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 64 | Gd | gadolinium | 1925 | 157.26 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 64 | Gd | gadolinium | 1909 | 157.3 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 64 | Gd | gadolinium | 1902 | 156 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 65 | Tb | terbium | 2021 | 158.925 354(7) | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 65 | Tb | terbium | 2017 | 158.925 354(8) | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 65 | Tb | terbium | 2005 | 158.925 35(2) | [doi:10.1351/pac200678112051](https://doi.org/10.1351/pac200678112051) |
| 65 | Tb | terbium | 1995 | 158.925 34(2) | [doi:10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) |
| 65 | Tb | terbium | 1985 | 158.925 34(3) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 65 | Tb | terbium | 1969 | 158.9254(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 65 | Tb | terbium | 1961 | 158.924 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 65 | Tb | terbium | 1953 | 158.93 | [doi:10.1039/JR9540004713](https://doi.org/10.1039/JR9540004713) |
| 65 | Tb | terbium | 1907 | 159.2 | [doi:10.1021/ja01956a001](https://doi.org/10.1021/ja01956a001) |
| 65 | Tb | terbium | 1902 | 160 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 66 | Dy | dysprosium | 2001 | 162.500(1) | [doi:10.1351/pac200375081107](https://doi.org/10.1351/pac200375081107) |
| 66 | Dy | dysprosium | 1969 | 162.50(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 66 | Dy | dysprosium | 1961 | 162.50 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 66 | Dy | dysprosium | 1955 | 162.51 | [doi:10.1021/ja01595a001](https://doi.org/10.1021/ja01595a001) |
| 66 | Dy | dysprosium | 1931 | 162.46 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 66 | Dy | dysprosium | 1925 | 162.52 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 66 | Dy | dysprosium | 1908 | 162.5 | [doi:10.1021/ja01943a001](https://doi.org/10.1021/ja01943a001) |
| 67 | Ho | holmium | 2021 | 164.930 329(5) | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 67 | Ho | holmium | 2017 | 164.930 328(7) | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 67 | Ho | holmium | 2013 | 164.930 33(2) | [doi:10.1515/pac-2015-0305](https://doi.org/10.1515/pac-2015-0305) |
| 67 | Ho | holmium | 1995 | 164.930 32(2) | [doi:10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) |
| 67 | Ho | holmium | 1985 | 164.930 32(3) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 67 | Ho | holmium | 1971 | 164.9304(1) | [doi:10.1351/pac197230030637](https://doi.org/10.1351/pac197230030637) |
| 67 | Ho | holmium | 1969 | 164.9303(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 67 | Ho | holmium | 1961 | 164.930 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 67 | Ho | holmium | 1941 | 164.94 | [doi:10.1039/JR9410000146](https://doi.org/10.1039/JR9410000146) |
| 67 | Ho | holmium | 1931 | 163.5 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 67 | Ho | holmium | 1925 | 163.4 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 67 | Ho | holmium | 1913 | 163.5 | [doi:10.1021/ja02212a001](https://doi.org/10.1021/ja02212a001) |
| 68 | Er | erbium | 1999 | 167.259(3) | [doi:10.1351/pac200173040667](https://doi.org/10.1351/pac200173040667) |
| 68 | Er | erbium | 1969 | 167.26(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 68 | Er | erbium | 1961 | 167.26 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 68 | Er | erbium | 1955 | 167.27 | [doi:10.1021/ja01595a001](https://doi.org/10.1021/ja01595a001) |
| 68 | Er | erbium | 1938 | 167.2 | [doi:10.1039/JR9380001101](https://doi.org/10.1039/JR9380001101) |
| 68 | Er | erbium | 1931 | 167.64 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 68 | Er | erbium | 1912 | 167.7 | [doi:10.1021/ja02224a601](https://doi.org/10.1021/ja02224a601) |
| 68 | Er | erbium | 1909 | 167.4 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 68 | Er | erbium | 1902 | 166 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 69 | Tm | thulium | 2021 | 168.934 219(5) | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 69 | Tm | thulium | 2017 | 168.934 218(6) | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 69 | Tm | thulium | 2013 | 168.934 22(2) | [doi:10.1515/pac-2015-0305](https://doi.org/10.1515/pac-2015-0305) |
| 69 | Tm | thulium | 1995 | 168.934 21(2) | [doi:10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) |
| 69 | Tm | thulium | 1985 | 168.934 21(3) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 69 | Tm | thulium | 1969 | 168.9342(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 69 | Tm | thulium | 1961 | 168.934 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 69 | Tm | thulium | 1953 | 168.94 | [doi:10.1039/JR9540004713](https://doi.org/10.1039/JR9540004713) |
| 69 | Tm | thulium | 1925 | 169.4 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 69 | Tm | thulium | 1922 | 169.9 | [doi:10.1021/ja01441a001](https://doi.org/10.1021/ja01441a001) |
| 69 | Tm | thulium | 1909 | 168.5 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 69 | Tm | thulium | 1902 | 171 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 70 | Yb | ytterbium | 2015 | 173.045(10) | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 70 | Yb | ytterbium | 2007 | 173.054(5) | [doi:10.1351/PAC-REP-09-08-03](https://doi.org/10.1351/PAC-REP-09-08-03) |
| 70 | Yb | ytterbium | 1969 | 173.04(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 70 | Yb | ytterbium | 1934 | 173.04 | [doi:10.1039/JR9340000499](https://doi.org/10.1039/JR9340000499) |
| 70 | Yb | ytterbium | 1931 | 173.5 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 70 | Yb | ytterbium | 1925 | 173.6 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 70 | Yb | ytterbium | 1916 | 173.5 | [doi:10.1021/ja02176a001](https://doi.org/10.1021/ja02176a001) |
| 70 | Yb | ytterbium | 1909 | 172 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 70 | Yb | ytterbium | 1902 | 173 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 71 | Lu | lutetium | 2024 | 174.966 69(5) |  |
| 71 | Lu | lutetium | 2007 | 174.9668(1) | [doi:10.1351/PAC-REP-09-08-03](https://doi.org/10.1351/PAC-REP-09-08-03) |
| 71 | Lu | lutetium | 1981 | 174.967(1) | [doi:10.1351/pac198355071101](https://doi.org/10.1351/pac198355071101) |
| 71 | Lu | lutetium | 1977 | 174.967(3) | [doi:10.1351/pac197951020405](https://doi.org/10.1351/pac197951020405) |
| 71 | Lu | lutetium | 1969 | 174.97(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 71 | Lu | lutetium | 1961 | 174.97 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 71 | Lu | lutetium | 1940 | 174.99 | [doi:10.1039/JR9400000475](https://doi.org/10.1039/JR9400000475) |
| 71 | Lu | lutetium | 1916 | 175 | [doi:10.1021/ja02176a001](https://doi.org/10.1021/ja02176a001) |
| 71 | Lu | lutetium | 1909 | 174 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 72 | Hf | hafnium | 2019 | 178.486(6) | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 72 | Hf | hafnium | 1985 | 178.49(2) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 72 | Hf | hafnium | 1969 | 178.49(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 72 | Hf | hafnium | 1961 | 178.49 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 72 | Hf | hafnium | 1955 | 178.50 | [doi:10.1021/ja01595a001](https://doi.org/10.1021/ja01595a001) |
| 72 | Hf | hafnium | 1931 | 178.6 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 73 | Ta | tantalum | 2005 | 180.947 88(2) | [doi:10.1351/pac200678112051](https://doi.org/10.1351/pac200678112051) |
| 73 | Ta | tantalum | 1979 | 180.9479(1) | [doi:10.1351/pac198052102349](https://doi.org/10.1351/pac198052102349) |
| 73 | Ta | tantalum | 1969 | 180.9479(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 73 | Ta | tantalum | 1961 | 180.948 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 73 | Ta | tantalum | 1953 | 180.95 | [doi:10.1039/JR9540004713](https://doi.org/10.1039/JR9540004713) |
| 73 | Ta | tantalum | 1936 | 180.88 | [doi:10.1039/JR9370001893](https://doi.org/10.1039/JR9370001893) |
| 73 | Ta | tantalum | 1931 | 181.4 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 73 | Ta | tantalum | 1912 | 181.5 | [doi:10.1021/ja02224a601](https://doi.org/10.1021/ja02224a601) |
| 73 | Ta | tantalum | 1909 | 181 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 73 | Ta | tantalum | 1907 | 181 | [doi:10.1021/ja01956a001](https://doi.org/10.1021/ja01956a001) |
| 73 | Ta | tantalum | 1902 | 183 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 74 | W | tungsten | 1991 | 183.84(1) | [doi:10.1351/pac199264101519](https://doi.org/10.1351/pac199264101519) |
| 74 | W | tungsten | 1969 | 183.85(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 74 | W | tungsten | 1961 | 183.85 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 74 | W | tungsten | 1955 | 183.86 | [doi:10.1021/ja01595a001](https://doi.org/10.1021/ja01595a001) |
| 74 | W | tungsten | 1938 | 183.92 | [doi:10.1039/JR9380001101](https://doi.org/10.1039/JR9380001101) |
| 74 | W | tungsten | 1902 | 184 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 75 | Re | rhenium | 1973 | 186.207(1) | [doi:10.1351/pac197437040589](https://doi.org/10.1351/pac197437040589) |
| 75 | Re | rhenium | 1969 | 186.2(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 75 | Re | rhenium | 1961 | 186.2 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 75 | Re | rhenium | 1955 | 186.22 | [doi:10.1021/ja01595a001](https://doi.org/10.1021/ja01595a001) |
| 75 | Re | rhenium | 1931 | 186.31 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 76 | Os | osmium | 1991 | 190.23(3) | [doi:10.1351/pac199264101519](https://doi.org/10.1351/pac199264101519) |
| 76 | Os | osmium | 1969 | 190.2(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 76 | Os | osmium | 1938 | 190.2 | [doi:10.1039/JR9380001101](https://doi.org/10.1039/JR9380001101) |
| 76 | Os | osmium | 1934 | 191.5 | [doi:10.1039/JR9340000499](https://doi.org/10.1039/JR9340000499) |
| 76 | Os | osmium | 1925 | 190.8 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 76 | Os | osmium | 1909 | 190.9 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 76 | Os | osmium | 1902 | 191 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 77 | Ir | iridium | 2017 | 192.217(2) | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 77 | Ir | iridium | 1993 | 192.217(3) | [doi:10.1351/pac199466122423](https://doi.org/10.1351/pac199466122423) |
| 77 | Ir | iridium | 1969 | 192.22(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 77 | Ir | iridium | 1953 | 192.2 | [doi:10.1039/JR9540004713](https://doi.org/10.1039/JR9540004713) |
| 77 | Ir | iridium | 1909 | 193.1 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 77 | Ir | iridium | 1902 | 193 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 78 | Pt | platinum | 2005 | 195.084(9) | [doi:10.1351/pac200678112051](https://doi.org/10.1351/pac200678112051) |
| 78 | Pt | platinum | 1995 | 195.078(2) | [doi:10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) |
| 78 | Pt | platinum | 1979 | 195.08(3) | [doi:10.1351/pac198052102349](https://doi.org/10.1351/pac198052102349) |
| 78 | Pt | platinum | 1969 | 195.09(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 78 | Pt | platinum | 1955 | 195.09 | [doi:10.1021/ja01595a001](https://doi.org/10.1021/ja01595a001) |
| 78 | Pt | platinum | 1925 | 195.23 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 78 | Pt | platinum | 1911 | 195.2 | [doi:10.1021/ja01928a001](https://doi.org/10.1021/ja01928a001) |
| 78 | Pt | platinum | 1909 | 195 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 78 | Pt | platinum | 1902 | 194.8 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 79 | Au | gold | 2017 | 196.966 570(4) | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 79 | Au | gold | 2013 | 196.966 569(5) | [doi:10.1515/pac-2015-0305](https://doi.org/10.1515/pac-2015-0305) |
| 79 | Au | gold | 2005 | 196.966 569(4) | [doi:10.1351/pac200678112051](https://doi.org/10.1351/pac200678112051) |
| 79 | Au | gold | 1995 | 196.966 55(2) | [doi:10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) |
| 79 | Au | gold | 1985 | 196.966 54(3) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 79 | Au | gold | 1969 | 196.9665(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 79 | Au | gold | 1961 | 196.967 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 79 | Au | gold | 1953 | 197 | [doi:10.1039/JR9540004713](https://doi.org/10.1039/JR9540004713) |
| 79 | Au | gold | 1902 | 197.2 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 80 | Hg | mercury | 2011 | 200.592(3) | [doi:10.1351/PAC-REP-13-03-02](https://doi.org/10.1351/PAC-REP-13-03-02) |
| 80 | Hg | mercury | 1989 | 200.59(2) | [doi:10.1351/pac199163070975](https://doi.org/10.1351/pac199163070975) |
| 80 | Hg | mercury | 1969 | 200.59(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 80 | Hg | mercury | 1961 | 200.59 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 80 | Hg | mercury | 1925 | 200.61 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 80 | Hg | mercury | 1912 | 200.6 | [doi:10.1021/ja02224a601](https://doi.org/10.1021/ja02224a601) |
| 80 | Hg | mercury | 1903 | 200 | [doi:10.1021/ja02003a001](https://doi.org/10.1021/ja02003a001) |
| 80 | Hg | mercury | 1902 | 200.3 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 81 | Tl | thallium | 2009 | [204.382, 204.385] | [doi:10.1351/PAC-REP-10-09-14](https://doi.org/10.1351/PAC-REP-10-09-14) |
| 81 | Tl | thallium | 1985 | 204.3833(2) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 81 | Tl | thallium | 1979 | 204.383(1) | [doi:10.1351/pac198052102349](https://doi.org/10.1351/pac198052102349) |
| 81 | Tl | thallium | 1969 | 204.37(3) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 81 | Tl | thallium | 1961 | 204.37 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 81 | Tl | thallium | 1925 | 204.39 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 81 | Tl | thallium | 1909 | 204 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 81 | Tl | thallium | 1902 | 204.1 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 82 | Pb | lead | 2020 | [206.14, 207.94] | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 82 | Pb | lead | 1969 | 207.2(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 82 | Pb | lead | 1961 | 207.19 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 82 | Pb | lead | 1937 | 207.21 | [doi:10.1039/JR9370001900](https://doi.org/10.1039/JR9370001900) |
| 82 | Pb | lead | 1931 | 207.22 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 82 | Pb | lead | 1916 | 207.20 | [doi:10.1021/ja02176a001](https://doi.org/10.1021/ja02176a001) |
| 82 | Pb | lead | 1909 | 207.10 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 82 | Pb | lead | 1902 | 206.9 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 83 | Bi | bismuth | 2005 | 208.980 40(1) | [doi:10.1351/pac200678112051](https://doi.org/10.1351/pac200678112051) |
| 83 | Bi | bismuth | 1995 | 208.980 38(2) | [doi:10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) |
| 83 | Bi | bismuth | 1985 | 208.980 37(3) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 83 | Bi | bismuth | 1971 | 208.9804(1) | [doi:10.1351/pac197230030637](https://doi.org/10.1351/pac197230030637) |
| 83 | Bi | bismuth | 1969 | 208.9806(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 83 | Bi | bismuth | 1961 | 208.980 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 83 | Bi | bismuth | 1925 | 209 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 83 | Bi | bismuth | 1922 | 209 | [doi:10.1021/ja01441a001](https://doi.org/10.1021/ja01441a001) |
| 83 | Bi | bismuth | 1907 | 208 | [doi:10.1021/ja01956a001](https://doi.org/10.1021/ja01956a001) |
| 83 | Bi | bismuth | 1902 | 208.5 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 90 | Th | thorium | 2013 | 232.0377(4) | [doi:10.1515/pac-2015-0305](https://doi.org/10.1515/pac-2015-0305) |
| 90 | Th | thorium | 2005 | 232.038 06(2) | [doi:10.1351/pac200678112051](https://doi.org/10.1351/pac200678112051) |
| 90 | Th | thorium | 1969 | 232.0381(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 90 | Th | thorium | 1961 | 232.038 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 90 | Th | thorium | 1953 | 232.05 | [doi:10.1039/JR9540004713](https://doi.org/10.1039/JR9540004713) |
| 90 | Th | thorium | 1931 | 232.12 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 90 | Th | thorium | 1920 | 232.15 | [doi:10.1021/ja02233a600](https://doi.org/10.1021/ja02233a600) |
| 90 | Th | thorium | 1911 | 232.4 | [doi:10.1021/ja01928a001](https://doi.org/10.1021/ja01928a001) |
| 90 | Th | thorium | 1909 | 232.42 | [doi:10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) |
| 90 | Th | thorium | 1902 | 232.5 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |
| 91 | Pa | protactinium | 2017 | 231.035 88(1) | [doi:10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) |
| 91 | Pa | protactinium | 1989 | 231.035 88(2) | [doi:10.1351/pac199163070975](https://doi.org/10.1351/pac199163070975) |
| 91 | Pa | protactinium | 1985 | 231.035 88(2) | [doi:10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) |
| 91 | Pa | protactinium | 1969 | 231.0359(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 91 | Pa | protactinium | 1936 | 231 | [doi:10.1039/JR9370001893](https://doi.org/10.1039/JR9370001893) |
| 92 | U | uranium | 1999 | 238.028 91(3) | [doi:10.1351/pac200173040667](https://doi.org/10.1351/pac200173040667) |
| 92 | U | uranium | 1979 | 238.0289(1) | [doi:10.1351/pac198052102349](https://doi.org/10.1351/pac198052102349) |
| 92 | U | uranium | 1969 | 238.029(1) | [doi:10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) |
| 92 | U | uranium | 1961 | 238.03 | [doi:10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) |
| 92 | U | uranium | 1937 | 238.07 | [doi:10.1039/JR9370001900](https://doi.org/10.1039/JR9370001900) |
| 92 | U | uranium | 1931 | 238.14 | [doi:10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) |
| 92 | U | uranium | 1925 | 238.17 | [doi:10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) |
| 92 | U | uranium | 1916 | 238.2 | [doi:10.1021/ja02176a001](https://doi.org/10.1021/ja02176a001) |
| 92 | U | uranium | 1903 | 238.5 | [doi:10.1021/ja02003a001](https://doi.org/10.1021/ja02003a001) |
| 92 | U | uranium | 1902 | 239.5 | [doi:10.1007/BF01370337](https://doi.org/10.1007/BF01370337) |

## Isotopic abundances

| Z | Isotope | Element | Amount fraction |
|--:|---|---|--:|
| 1 | H-1 | hydrogen | [0.999 72, 0.999 99] |
| 1 | H-2 | hydrogen | [0.000 01, 0.000 28] |
| 2 | He-3 | helium | 0.000 002(2) |
| 2 | He-4 | helium | 0.999 998(2) |
| 3 | Li-6 | lithium | [0.019, 0.078] |
| 3 | Li-7 | lithium | [0.922, 0.981] |
| 4 | Be-9 | beryllium | 1 |
| 5 | B-10 | boron | [0.189, 0.204] |
| 5 | B-11 | boron | [0.796, 0.811] |
| 6 | C-12 | carbon | [0.9884, 0.9904] |
| 6 | C-13 | carbon | [0.0096, 0.0116] |
| 7 | N-14 | nitrogen | [0.995 78, 0.996 63] |
| 7 | N-15 | nitrogen | [0.003 37, 0.004 22] |
| 8 | O-16 | oxygen | [0.997 38, 0.997 76] |
| 8 | O-17 | oxygen | [0.000 367, 0.000 400] |
| 8 | O-18 | oxygen | [0.001 87, 0.002 22] |
| 9 | F-19 | fluorine | 1 |
| 10 | Ne-20 | neon | 0.9048(3) |
| 10 | Ne-21 | neon | 0.0027(1) |
| 10 | Ne-22 | neon | 0.0925(3) |
| 11 | Na-23 | sodium | 1 |
| 12 | Mg-24 | magnesium | [0.7888, 0.7905] |
| 12 | Mg-25 | magnesium | [0.099 88, 0.100 34] |
| 12 | Mg-26 | magnesium | [0.1096, 0.1109] |
| 13 | Al-27 | aluminium | 1 |
| 14 | Si-28 | silicon | [0.921 91, 0.923 18] |
| 14 | Si-29 | silicon | [0.046 45, 0.046 99] |
| 14 | Si-30 | silicon | [0.030 37, 0.031 10] |
| 15 | P-31 | phosphorus | 1 |
| 16 | S-32 | sulfur | [0.9441, 0.9529] |
| 16 | S-33 | sulfur | [0.007 29, 0.007 97] |
| 16 | S-34 | sulfur | [0.0396, 0.0477] |
| 16 | S-36 | sulfur | [0.000 129, 0.000 187] |
| 17 | Cl-35 | chlorine | [0.755, 0.761] |
| 17 | Cl-37 | chlorine | [0.239, 0.245] |
| 18 | Ar-36 | argon | [0.0000, 0.0207] |
| 18 | Ar-38 | argon | [0.000, 0.043] |
| 18 | Ar-40 | argon | [0.936, 1.000] |
| 19 | K-39 | potassium | 0.932 581(44) |
| 19 | K-40 | potassium | 0.000 117(1) |
| 19 | K-41 | potassium | 0.067 302(44) |
| 20 | Ca-40 | calcium | 0.969 41(156) |
| 20 | Ca-42 | calcium | 0.006 47(23) |
| 20 | Ca-43 | calcium | 0.001 35(10) |
| 20 | Ca-44 | calcium | 0.020 86(110) |
| 20 | Ca-46 | calcium | 0.000 04(3) |
| 20 | Ca-48 | calcium | 0.001 87(21) |
| 21 | Sc-45 | scandium | 1 |
| 22 | Ti-46 | titanium | 0.0825(3) |
| 22 | Ti-47 | titanium | 0.0744(2) |
| 22 | Ti-48 | titanium | 0.7372(3) |
| 22 | Ti-49 | titanium | 0.0541(2) |
| 22 | Ti-50 | titanium | 0.0518(2) |
| 23 | V-50 | vanadium | 0.002 50(10) |
| 23 | V-51 | vanadium | 0.997 50(10) |
| 24 | Cr-50 | chromium | 0.043 45(13) |
| 24 | Cr-52 | chromium | 0.837 89(18) |
| 24 | Cr-53 | chromium | 0.095 01(17) |
| 24 | Cr-54 | chromium | 0.023 65(7) |
| 25 | Mn-55 | manganese | 1 |
| 26 | Fe-54 | iron | 0.058 45(105) |
| 26 | Fe-56 | iron | 0.917 54(106) |
| 26 | Fe-57 | iron | 0.021 19(29) |
| 26 | Fe-58 | iron | 0.002 82(12) |
| 27 | Co-59 | cobalt | 1 |
| 28 | Ni-58 | nickel | 0.680 769(190) |
| 28 | Ni-60 | nickel | 0.262 231(150) |
| 28 | Ni-61 | nickel | 0.011 399(13) |
| 28 | Ni-62 | nickel | 0.036 345(40) |
| 28 | Ni-64 | nickel | 0.009 256(19) |
| 29 | Cu-63 | copper | 0.6915(15) |
| 29 | Cu-65 | copper | 0.3085(15) |
| 30 | Zn-64 | zinc | 0.4917(75) |
| 30 | Zn-66 | zinc | 0.2773(98) |
| 30 | Zn-67 | zinc | 0.0404(16) |
| 30 | Zn-68 | zinc | 0.1845(63) |
| 30 | Zn-70 | zinc | 0.0061(10) |
| 31 | Ga-69 | gallium | 0.601 08(50) |
| 31 | Ga-71 | gallium | 0.398 92(50) |
| 32 | Ge-70 | germanium | 0.2052(19) |
| 32 | Ge-72 | germanium | 0.2745(15) |
| 32 | Ge-73 | germanium | 0.0776(8) |
| 32 | Ge-74 | germanium | 0.3652(12) |
| 32 | Ge-76 | germanium | 0.0775(12) |
| 33 | As-75 | arsenic | 1 |
| 34 | Se-74 | selenium | 0.0086(3) |
| 34 | Se-76 | selenium | 0.0923(7) |
| 34 | Se-77 | selenium | 0.0760(7) |
| 34 | Se-78 | selenium | 0.2369(22) |
| 34 | Se-80 | selenium | 0.4980(36) |
| 34 | Se-82 | selenium | 0.0882(15) |
| 35 | Br-79 | bromine | [0.505, 0.508] |
| 35 | Br-81 | bromine | [0.492, 0.495] |
| 36 | Kr-78 | krypton | 0.003 55(3) |
| 36 | Kr-80 | krypton | 0.022 86(10) |
| 36 | Kr-82 | krypton | 0.115 93(31) |
| 36 | Kr-83 | krypton | 0.115 00(19) |
| 36 | Kr-84 | krypton | 0.569 87(15) |
| 36 | Kr-86 | krypton | 0.172 79(41) |
| 37 | Rb-85 | rubidium | 0.7217(2) |
| 37 | Rb-87 | rubidium | 0.2783(2) |
| 38 | Sr-84 | strontium | 0.0056(2) |
| 38 | Sr-86 | strontium | 0.0986(20) |
| 38 | Sr-87 | strontium | 0.0700(20) |
| 38 | Sr-88 | strontium | 0.8258(35) |
| 39 | Y-89 | yttrium | 1 |
| 40 | Zr-90 | zirconium | 0.5147(6) |
| 40 | Zr-91 | zirconium | 0.1123(6) |
| 40 | Zr-92 | zirconium | 0.1716(4) |
| 40 | Zr-94 | zirconium | 0.1736(7) |
| 40 | Zr-96 | zirconium | 0.0278(4) |
| 41 | Nb-93 | niobium | 1 |
| 42 | Mo-92 | molybdenum | 0.146 49(106) |
| 42 | Mo-94 | molybdenum | 0.091 87(33) |
| 42 | Mo-95 | molybdenum | 0.158 73(30) |
| 42 | Mo-96 | molybdenum | 0.166 73(8) |
| 42 | Mo-97 | molybdenum | 0.095 82(15) |
| 42 | Mo-98 | molybdenum | 0.242 92(80) |
| 42 | Mo-100 | molybdenum | 0.097 44(65) |
| 44 | Ru-96 | ruthenium | 0.0554(14) |
| 44 | Ru-98 | ruthenium | 0.0187(3) |
| 44 | Ru-99 | ruthenium | 0.1276(14) |
| 44 | Ru-100 | ruthenium | 0.1260(7) |
| 44 | Ru-101 | ruthenium | 0.1706(2) |
| 44 | Ru-102 | ruthenium | 0.3155(14) |
| 44 | Ru-104 | ruthenium | 0.1862(27) |
| 45 | Rh-103 | rhodium | 1 |
| 46 | Pd-102 | palladium | 0.0102(1) |
| 46 | Pd-104 | palladium | 0.1114(8) |
| 46 | Pd-105 | palladium | 0.2233(8) |
| 46 | Pd-106 | palladium | 0.2733(3) |
| 46 | Pd-108 | palladium | 0.2646(9) |
| 46 | Pd-110 | palladium | 0.1172(9) |
| 47 | Ag-107 | silver | 0.518 39(8) |
| 47 | Ag-109 | silver | 0.481 61(8) |
| 48 | Cd-106 | cadmium | 0.012 45(22) |
| 48 | Cd-108 | cadmium | 0.008 88(11) |
| 48 | Cd-110 | cadmium | 0.124 70(61) |
| 48 | Cd-111 | cadmium | 0.127 95(12) |
| 48 | Cd-112 | cadmium | 0.241 09(7) |
| 48 | Cd-113 | cadmium | 0.122 27(7) |
| 48 | Cd-114 | cadmium | 0.287 54(81) |
| 48 | Cd-116 | cadmium | 0.075 12(54) |
| 49 | In-113 | indium | 0.042 81(52) |
| 49 | In-115 | indium | 0.957 19(52) |
| 50 | Sn-112 | tin | 0.0097(1) |
| 50 | Sn-114 | tin | 0.0066(1) |
| 50 | Sn-115 | tin | 0.0034(1) |
| 50 | Sn-116 | tin | 0.1454(9) |
| 50 | Sn-117 | tin | 0.0768(7) |
| 50 | Sn-118 | tin | 0.2422(9) |
| 50 | Sn-119 | tin | 0.0859(4) |
| 50 | Sn-120 | tin | 0.3258(9) |
| 50 | Sn-122 | tin | 0.0463(3) |
| 50 | Sn-124 | tin | 0.0579(5) |
| 51 | Sb-121 | antimony | 0.5721(5) |
| 51 | Sb-123 | antimony | 0.4279(5) |
| 52 | Te-120 | tellurium | 0.0009(1) |
| 52 | Te-122 | tellurium | 0.0255(12) |
| 52 | Te-123 | tellurium | 0.0089(3) |
| 52 | Te-124 | tellurium | 0.0474(14) |
| 52 | Te-125 | tellurium | 0.0707(15) |
| 52 | Te-126 | tellurium | 0.1884(25) |
| 52 | Te-128 | tellurium | 0.3174(8) |
| 52 | Te-130 | tellurium | 0.3408(62) |
| 53 | I-127 | iodine | 1 |
| 54 | Xe-124 | xenon | 0.000 95(5) |
| 54 | Xe-126 | xenon | 0.000 89(3) |
| 54 | Xe-128 | xenon | 0.019 10(13) |
| 54 | Xe-129 | xenon | 0.264 01(138) |
| 54 | Xe-130 | xenon | 0.040 71(22) |
| 54 | Xe-131 | xenon | 0.212 32(51) |
| 54 | Xe-132 | xenon | 0.269 09(55) |
| 54 | Xe-134 | xenon | 0.104 36(35) |
| 54 | Xe-136 | xenon | 0.088 57(72) |
| 55 | Cs-133 | caesium | 1 |
| 56 | Ba-130 | barium | 0.0011(1) |
| 56 | Ba-132 | barium | 0.0010(1) |
| 56 | Ba-134 | barium | 0.0242(15) |
| 56 | Ba-135 | barium | 0.0659(10) |
| 56 | Ba-136 | barium | 0.0785(24) |
| 56 | Ba-137 | barium | 0.1123(23) |
| 56 | Ba-138 | barium | 0.7170(29) |
| 57 | La-138 | lanthanum | 0.000 8881(71) |
| 57 | La-139 | lanthanum | 0.999 1119(71) |
| 58 | Ce-136 | cerium | 0.001 85(2) |
| 58 | Ce-138 | cerium | 0.002 51(2) |
| 58 | Ce-140 | cerium | 0.884 50(51) |
| 58 | Ce-142 | cerium | 0.111 14(51) |
| 59 | Pr-141 | praseodymium | 1 |
| 60 | Nd-142 | neodymium | 0.271 52(40) |
| 60 | Nd-143 | neodymium | 0.121 74(26) |
| 60 | Nd-144 | neodymium | 0.237 98(19) |
| 60 | Nd-145 | neodymium | 0.082 93(12) |
| 60 | Nd-146 | neodymium | 0.171 89(32) |
| 60 | Nd-148 | neodymium | 0.057 56(21) |
| 60 | Nd-150 | neodymium | 0.056 38(28) |
| 62 | Sm-144 | samarium | 0.0308(4) |
| 62 | Sm-147 | samarium | 0.1500(14) |
| 62 | Sm-148 | samarium | 0.1125(9) |
| 62 | Sm-149 | samarium | 0.1382(10) |
| 62 | Sm-150 | samarium | 0.0737(9) |
| 62 | Sm-152 | samarium | 0.2674(9) |
| 62 | Sm-154 | samarium | 0.2274(14) |
| 63 | Eu-151 | europium | 0.4781(6) |
| 63 | Eu-153 | europium | 0.5219(6) |
| 64 | Gd-152 | gadolinium | 0.002 04(2) |
| 64 | Gd-154 | gadolinium | 0.021 87(9) |
| 64 | Gd-155 | gadolinium | 0.148 28(60) |
| 64 | Gd-156 | gadolinium | 0.204 93(22) |
| 64 | Gd-157 | gadolinium | 0.156 57(17) |
| 64 | Gd-158 | gadolinium | 0.248 20(20) |
| 64 | Gd-160 | gadolinium | 0.218 11(28) |
| 65 | Tb-159 | terbium | 1 |
| 66 | Dy-156 | dysprosium | 0.000 56(3) |
| 66 | Dy-158 | dysprosium | 0.000 95(3) |
| 66 | Dy-160 | dysprosium | 0.023 29(18) |
| 66 | Dy-161 | dysprosium | 0.188 89(42) |
| 66 | Dy-162 | dysprosium | 0.254 75(36) |
| 66 | Dy-163 | dysprosium | 0.248 96(42) |
| 66 | Dy-164 | dysprosium | 0.282 60(54) |
| 67 | Ho-165 | holmium | 1 |
| 68 | Er-162 | erbium | 0.001 39(5) |
| 68 | Er-164 | erbium | 0.016 01(3) |
| 68 | Er-166 | erbium | 0.335 03(36) |
| 68 | Er-167 | erbium | 0.228 69(9) |
| 68 | Er-168 | erbium | 0.269 78(18) |
| 68 | Er-170 | erbium | 0.149 10(36) |
| 69 | Tm-169 | thulium | 1 |
| 70 | Yb-168 | ytterbium | 0.001 26(1) |
| 70 | Yb-170 | ytterbium | 0.030 23(2) |
| 70 | Yb-171 | ytterbium | 0.142 16(7) |
| 70 | Yb-172 | ytterbium | 0.217 54(10) |
| 70 | Yb-173 | ytterbium | 0.160 98(9) |
| 70 | Yb-174 | ytterbium | 0.318 96(26) |
| 70 | Yb-176 | ytterbium | 0.128 87(30) |
| 71 | Lu-175 | lutetium | 0.974 14(5) |
| 71 | Lu-176 | lutetium | 0.025 86(5) |
| 72 | Hf-174 | hafnium | 0.001 61(2) |
| 72 | Hf-176 | hafnium | 0.0524(14) |
| 72 | Hf-177 | hafnium | 0.1858(9) |
| 72 | Hf-178 | hafnium | 0.2728(6) |
| 72 | Hf-179 | hafnium | 0.1363(3) |
| 72 | Hf-180 | hafnium | 0.3512(16) |
| 73 | Ta-180 | tantalum | 0.000 1176(23) |
| 73 | Ta-181 | tantalum | 0.999 8824(23) |
| 74 | W-180 | tungsten | 0.0012(1) |
| 74 | W-182 | tungsten | 0.2650(16) |
| 74 | W-183 | tungsten | 0.1431(4) |
| 74 | W-184 | tungsten | 0.3064(2) |
| 74 | W-186 | tungsten | 0.2843(19) |
| 75 | Re-185 | rhenium | 0.3740(5) |
| 75 | Re-187 | rhenium | 0.6260(5) |
| 76 | Os-184 | osmium | 0.0002(2) |
| 76 | Os-186 | osmium | 0.0159(64) |
| 76 | Os-187 | osmium | 0.0196(17) |
| 76 | Os-188 | osmium | 0.1324(27) |
| 76 | Os-189 | osmium | 0.1615(23) |
| 76 | Os-190 | osmium | 0.2626(20) |
| 76 | Os-192 | osmium | 0.4078(32) |
| 77 | Ir-191 | iridium | 0.3723(9) |
| 77 | Ir-193 | iridium | 0.6277(9) |
| 78 | Pt-190 | platinum | 0.000 12(2) |
| 78 | Pt-192 | platinum | 0.007 82(24) |
| 78 | Pt-194 | platinum | 0.328 64(410) |
| 78 | Pt-195 | platinum | 0.337 75(240) |
| 78 | Pt-196 | platinum | 0.252 11(340) |
| 78 | Pt-198 | platinum | 0.073 56(130) |
| 79 | Au-197 | gold | 1 |
| 80 | Hg-196 | mercury | 0.0015(1) |
| 80 | Hg-198 | mercury | 0.1004(3) |
| 80 | Hg-199 | mercury | 0.1694(12) |
| 80 | Hg-200 | mercury | 0.2314(9) |
| 80 | Hg-201 | mercury | 0.1317(9) |
| 80 | Hg-202 | mercury | 0.2974(13) |
| 80 | Hg-204 | mercury | 0.0682(4) |
| 81 | Tl-203 | thallium | [0.2944, 0.2959] |
| 81 | Tl-205 | thallium | [0.7041, 0.7056] |
| 82 | Pb-204 | lead | [0.0000, 0.0158] |
| 82 | Pb-206 | lead | [0.0190, 0.8673] |
| 82 | Pb-207 | lead | [0.0035, 0.2351] |
| 82 | Pb-208 | lead | [0.0338, 0.9775] |
| 83 | Bi-209 | bismuth | 1 |
| 90 | Th-230 | thorium | 0.0002(2) |
| 90 | Th-232 | thorium | 0.9998(2) |
| 91 | Pa-231 | protactinium | 1 |
| 92 | U-234 | uranium | 0.000 054(5) |
| 92 | U-235 | uranium | 0.007 204(6) |
| 92 | U-238 | uranium | 0.992 742(10) |