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

# lead

| Property | Value |
| --- | --- |
| Symbol | Pb |
| Atomic number | 82 |
| IRI | `https://hendrikborgelt.github.io/Draft_for_IUPAC_CIAAW-Isotopic-Abundances-and-Atomic-Weights/elements/Lead` |
| Wikidata | [Q708](https://www.wikidata.org/wiki/Q708) |

## Standard atomic weight

| Value | Year | Source | Status | Declaration |
| --- | --- | --- | --- | --- |
| [206.14, 207.94] | 2020 | [10.1515/pac-2019-0603](https://doi.org/10.1515/pac-2019-0603) | Current | [`AW-Pb-standard`](../id/AW-Pb-standard.md) |
| 207.2(1) | 1969 | [10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) | Deprecated, see [`AW-Pb-standard`](../id/AW-Pb-standard.md) | [`AW-Pb-standard-1969`](../id/AW-Pb-standard-1969.md) |
| 207.19 | 1961 | [10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) | Deprecated, see [`AW-Pb-standard-1969`](../id/AW-Pb-standard-1969.md) | [`AW-Pb-standard-1961`](../id/AW-Pb-standard-1961.md) |
| 207.21 | 1937 | [10.1039/JR9370001900](https://doi.org/10.1039/JR9370001900) | Deprecated, see [`AW-Pb-standard-1961`](../id/AW-Pb-standard-1961.md) | [`AW-Pb-standard-1937`](../id/AW-Pb-standard-1937.md) |
| 207.22 | 1931 | [10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) | Deprecated, see [`AW-Pb-standard-1937`](../id/AW-Pb-standard-1937.md) | [`AW-Pb-standard-1931`](../id/AW-Pb-standard-1931.md) |
| 207.20 | 1916 | [10.1021/ja02176a001](https://doi.org/10.1021/ja02176a001) | Deprecated, see [`AW-Pb-standard-1931`](../id/AW-Pb-standard-1931.md) | [`AW-Pb-standard-1916`](../id/AW-Pb-standard-1916.md) |
| 207.10 | 1909 | [10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) | Deprecated, see [`AW-Pb-standard-1916`](../id/AW-Pb-standard-1916.md) | [`AW-Pb-standard-1909`](../id/AW-Pb-standard-1909.md) |
| 206.9 | 1902 | [10.1007/BF01370337](https://doi.org/10.1007/BF01370337) | Deprecated, see [`AW-Pb-standard-1909`](../id/AW-Pb-standard-1909.md) | [`AW-Pb-standard-1902`](../id/AW-Pb-standard-1902.md) |


## Isotopes

| A | Representative isotopic composition | Year | Source | Declaration | ChEBI | Wikidata |
| --- | --- | --- | --- | --- | --- | --- |
| [204](../id/Pb-204.md) | [0.0000, 0.0158] | — | — | [`Abundance-Pb204`](../id/Abundance-Pb204.md) | — | [Q18883429](https://www.wikidata.org/wiki/Q18883429) |
| [206](../id/Pb-206.md) | [0.0190, 0.8673] | — | — | [`Abundance-Pb206`](../id/Abundance-Pb206.md) | — | [Q18883438](https://www.wikidata.org/wiki/Q18883438) |
| [207](../id/Pb-207.md) | [0.0035, 0.2351] | — | — | [`Abundance-Pb207`](../id/Abundance-Pb207.md) | — | [Q18883443](https://www.wikidata.org/wiki/Q18883443) |
| [208](../id/Pb-208.md) | [0.0338, 0.9775] | — | — | [`Abundance-Pb208`](../id/Abundance-Pb208.md) | — | [Q16670466](https://www.wikidata.org/wiki/Q16670466) |

## Bibliography

<div class="csl-bib-body">
<div class="csl-entry">ANNUAL REPORT OF THE INTERNATIONAL COMMITTEE ON ATOMIC WEIGHTS, 1916. (1915). <i>Journal of the American Chemical Society</i>, <i>37</i>(11), 2449–2452. https://doi.org/10.1021/ja02176a001 <a href="https://doi.org/10.1021/ja02176a001">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1021/ja02176a001">Scholia</a></div>
<div class="csl-entry">Atomic weights of the elements 1969. (1970). <i>Pure and Applied Chemistry</i>, <i>21</i>(1), 91–108. https://doi.org/10.1351/pac197021010091 <a href="https://doi.org/10.1351/pac197021010091">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1351/pac197021010091">Scholia</a></div>
<div class="csl-entry">Baxter, G. P., Curie, Mme. M., Hönigschmid, O., Lebeau, P., &#38; Meyer, R. J. (1931). First Report of the Committee on the Atomic Weights of the International Union of Chemistry. <i>J. Chem. Soc.</i>, <i>0</i>(0), 1617–1627. https://doi.org/10.1039/jr9310001617 <a href="https://doi.org/10.1039/JR9310001617">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1039/JR9310001617">Scholia</a></div>
<div class="csl-entry">Cameron, A. E., &#38; Wichers, Edward. (1962). <b>Report of the International Commission on Atomic Weights<sup>*</sup>(1961)</b>. <i>Journal of the American Chemical Society</i>, <i>84</i>(22), 4175–4197. https://doi.org/10.1021/ja00881a001 <a href="https://doi.org/10.1021/ja00881a001">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1021/ja00881a001">Scholia</a></div>
<div class="csl-entry">Clarke, F. W., Ostwald, W., Thorpe, T. E., &#38; Urbain, G. (1909). REPORT OF THE INTERNATIONAL COMMITTEE ON ATOMIC WEIGHTS. 1909. <i>Journal of the American Chemical Society</i>, <i>31</i>(1), 1–6. https://doi.org/10.1021/ja01931a001 <a href="https://doi.org/10.1021/ja01931a001">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1021/ja01931a001">Scholia</a></div>
<div class="csl-entry">Hönigschmid, O., &#38; Lebeau, P. (1937). Seventh Report of the Committee on Atomic Weights of the International Union of Chemistry. <i>J. Chem. Soc.</i>, <i>0</i>(0), 1900–1909. https://doi.org/10.1039/jr9370001900 <a href="https://doi.org/10.1039/JR9370001900">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1039/JR9370001900">Scholia</a></div>
<div class="csl-entry">Prohaska, T., Irrgeher, J., Benefield, J., Böhlke, J. K., Chesson, L. A., Coplen, T. B., Ding, T., Dunn, P. J. H., Gröning, M., Holden, N. E., Meijer, H. A. J., Moossen, H., Possolo, A., Takahashi, Y., Vogl, J., Walczyk, T., Wang, J., Wieser, M. E., Yoneda, S., … Meija, J. (2022). Standard atomic weights of the elements 2021 (IUPAC Technical Report). <i>Pure and Applied Chemistry</i>, <i>94</i>(5), 573–600. https://doi.org/10.1515/pac-2019-0603 <a href="https://doi.org/10.1515/pac-2019-0603">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1515/pac-2019-0603">Scholia</a></div>
<div class="csl-entry">Richards, Baxter, Hinrichsen, Köthner, P., &#38; Pellini, S. (1902). Zur Festsetzung der Atomgewichte. <i>Fresenius’ Zeitschrift für analytische Chemie</i>, <i>41</i>(2), 139–140. https://doi.org/10.1007/bf01370337 <a href="https://doi.org/10.1007/BF01370337">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1007/BF01370337">Scholia</a></div>
</div>

## Turtle

This resource as a file: [Lead.ttl](Lead.ttl)

```turtle
# Prototype: a suggestion, not an official CIAAW or IUPAC record. Official values are at https://ciaaw.org

@prefix adms: <http://www.w3.org/ns/adms#> .
@prefix chemrof: <https://w3id.org/chemrof/> .
@prefix ciaaw: <https://hendrikborgelt.github.io/Draft_for_IUPAC_CIAAW-Isotopic-Abundances-and-Atomic-Weights/ciaaw-draft#> .
@prefix ciaaw_draft: <https://hendrikborgelt.github.io/Draft_for_IUPAC_CIAAW-Isotopic-Abundances-and-Atomic-Weights/id/> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix element: <https://hendrikborgelt.github.io/Draft_for_IUPAC_CIAAW-Isotopic-Abundances-and-Atomic-Weights/elements/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix qudt: <http://qudt.org/schema/qudt/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix unit: <http://qudt.org/vocab/unit/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

ciaaw_draft:AW-Pb-standard-1902 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Pb-standard-1909 ;
    dcterms:issued "1902"^^xsd:gYear ;
    dcterms:source <https://doi.org/10.1007/BF01370337> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Lead ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 206.9 ] .

ciaaw_draft:AW-Pb-standard a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:issued "2020"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Pb-standard-1969 ;
    dcterms:source <https://doi.org/10.1515/pac-2019-0603> ;
    ciaaw:ofElement element:Lead ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:lowerBound 206.14 ;
            qudt:upperBound 207.94 ;
            ciaaw:significantFiguresLower 5 ;
            ciaaw:significantFiguresUpper 5 ] .

ciaaw_draft:AW-Pb-standard-1909 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Pb-standard-1916 ;
    dcterms:issued "1909"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Pb-standard-1902 ;
    dcterms:source <https://doi.org/10.1021/ja01931a001> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Lead ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 207.10 ] .

ciaaw_draft:AW-Pb-standard-1916 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Pb-standard-1931 ;
    dcterms:issued "1916"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Pb-standard-1909 ;
    dcterms:source <https://doi.org/10.1021/ja02176a001> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Lead ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 207.20 ] .

ciaaw_draft:AW-Pb-standard-1931 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Pb-standard-1937 ;
    dcterms:issued "1931"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Pb-standard-1916 ;
    dcterms:source <https://doi.org/10.1039/JR9310001617> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Lead ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 207.22 ] .

ciaaw_draft:AW-Pb-standard-1937 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Pb-standard-1961 ;
    dcterms:issued "1937"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Pb-standard-1931 ;
    dcterms:source <https://doi.org/10.1039/JR9370001900> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Lead ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 207.21 ] .

ciaaw_draft:AW-Pb-standard-1961 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Pb-standard-1969 ;
    dcterms:issued "1961"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Pb-standard-1937 ;
    dcterms:source <https://doi.org/10.1021/ja00881a001> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Lead ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 207.19 ] .

ciaaw_draft:AW-Pb-standard-1969 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Pb-standard ;
    dcterms:issued "1969"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Pb-standard-1961 ;
    dcterms:source <https://doi.org/10.1351/pac197021010091> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Lead ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 207.2 ;
            qudt:standardUncertainty 0.1 ;
            ciaaw:significantFigures 4 ;
            ciaaw:significantFiguresUncertainty 1 ] .

element:Lead a chemrof:ChemicalElement ;
    rdfs:label "lead"@en ;
    ciaaw:currentStandardAtomicWeight ciaaw_draft:AW-Pb-standard ;
    ciaaw:hasDeclaration ciaaw_draft:AW-Pb-standard,
        ciaaw_draft:AW-Pb-standard-1902,
        ciaaw_draft:AW-Pb-standard-1909,
        ciaaw_draft:AW-Pb-standard-1916,
        ciaaw_draft:AW-Pb-standard-1931,
        ciaaw_draft:AW-Pb-standard-1937,
        ciaaw_draft:AW-Pb-standard-1961,
        ciaaw_draft:AW-Pb-standard-1969 ;
    ciaaw:hasIsotope ciaaw_draft:Pb-204,
        ciaaw_draft:Pb-206,
        ciaaw_draft:Pb-207,
        ciaaw_draft:Pb-208 ;
    ciaaw:standardAtomicWeightLower 206.14 ;
    ciaaw:standardAtomicWeightUpper 207.94 ;
    chemrof:atomic_number 82 ;
    chemrof:symbol "Pb" .
```

[All atomic weights](../atomic-weights.md) · [All isotopic abundances](../isotopic-abundances.md)