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

# nitrogen

| Property | Value |
| --- | --- |
| Symbol | N |
| Atomic number | 7 |
| IRI | `https://hendrikborgelt.github.io/Draft_for_IUPAC_CIAAW-Isotopic-Abundances-and-Atomic-Weights/elements/Nitrogen` |
| Wikidata | [Q627](https://www.wikidata.org/wiki/Q627) |

## Standard atomic weight

| Value | Year | Source | Status | Declaration |
| --- | --- | --- | --- | --- |
| [14.006 43, 14.007 28] | 2009 | [10.1351/PAC-REP-10-09-14](https://doi.org/10.1351/PAC-REP-10-09-14) | Current | [`AW-N-standard`](../id/AW-N-standard.md) |
| 14.0067(2) | 1999 | [10.1351/pac200173040667](https://doi.org/10.1351/pac200173040667) | Deprecated, see [`AW-N-standard`](../id/AW-N-standard.md) | [`AW-N-standard-1999`](../id/AW-N-standard-1999.md) |
| 14.006 74(7) | 1985 | [10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) | Deprecated, see [`AW-N-standard-1999`](../id/AW-N-standard-1999.md) | [`AW-N-standard-1985`](../id/AW-N-standard-1985.md) |
| 14.0067(1) | 1969 | [10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) | Deprecated, see [`AW-N-standard-1985`](../id/AW-N-standard-1985.md) | [`AW-N-standard-1969`](../id/AW-N-standard-1969.md) |
| 14.0067 | 1961 | [10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) | Deprecated, see [`AW-N-standard-1969`](../id/AW-N-standard-1969.md) | [`AW-N-standard-1961`](../id/AW-N-standard-1961.md) |
| 14.008 | 1920 | [10.1021/ja02233a600](https://doi.org/10.1021/ja02233a600) | Deprecated, see [`AW-N-standard-1961`](../id/AW-N-standard-1961.md) | [`AW-N-standard-1920`](../id/AW-N-standard-1920.md) |
| 14.01 | 1907 | [10.1021/ja01956a001](https://doi.org/10.1021/ja01956a001) | Deprecated, see [`AW-N-standard-1920`](../id/AW-N-standard-1920.md) | [`AW-N-standard-1907`](../id/AW-N-standard-1907.md) |
| 14.04 | 1902 | [10.1007/BF01370337](https://doi.org/10.1007/BF01370337) | Deprecated, see [`AW-N-standard-1907`](../id/AW-N-standard-1907.md) | [`AW-N-standard-1902`](../id/AW-N-standard-1902.md) |

Notes: [m](#note-m)

## Isotopes

| A | Representative isotopic composition | Year | Source | Declaration | ChEBI | Wikidata |
| --- | --- | --- | --- | --- | --- | --- |
| [14](../id/N-14.md) | [0.995 78, 0.996 63] | — | — | [`Abundance-N14`](../id/Abundance-N14.md) | — | [Q1138479](https://www.wikidata.org/wiki/Q1138479) |
| [15](../id/N-15.md) | [0.003 37, 0.004 22] | — | — | [`Abundance-N15`](../id/Abundance-N15.md) | — | [Q3271953](https://www.wikidata.org/wiki/Q3271953) |

## Notes

<a id="note-m"></a>**m** Modified isotopic compositions may be found in commercially available material because the material has been subjected to some undisclosed or inadvertent isotopic fractionation. Substantial deviations in atomic weight of the element from that given in the table can occur.

## Bibliography

<div class="csl-bib-body">
<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">Atomic weights of the elements 1985. (1986). <i>Pure and Applied Chemistry</i>, <i>58</i>(12), 1677–1692. https://doi.org/10.1351/pac198658121677 <a href="https://doi.org/10.1351/pac198658121677">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1351/pac198658121677">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., Thorpe, T. E., Moissan, H., &#38; Ostwald, W. (1907). REPORT OF THE INTERNATIONAL COMMITTEE ON ATOMIC WEIGHTS. 1907. <i>Journal of the American Chemical Society</i>, <i>29</i>(2), 107–111. https://doi.org/10.1021/ja01956a001 <a href="https://doi.org/10.1021/ja01956a001">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1021/ja01956a001">Scholia</a></div>
<div class="csl-entry">Clarke, F., Thorpe, T., &#38; Urbain, G. (1919). Report of the International Committee on Atomic Weights for 1919-1920. <i>Journal of the American Chemical Society</i>, <i>41</i>(12), 1881–1887. https://doi.org/10.1021/ja02233a600 <a href="https://doi.org/10.1021/ja02233a600">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1021/ja02233a600">Scholia</a></div>
<div class="csl-entry">Coplen, T. B. (2001). Atomic weights of the elements 1999 (IUPAC Technical Report). <i>Pure and Applied Chemistry</i>, <i>73</i>(4), 667–683. https://doi.org/10.1351/pac200173040667 <a href="https://doi.org/10.1351/pac200173040667">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1351/pac200173040667">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 class="csl-entry">Wieser, M. E., &#38; Coplen, T. B. (2010). Atomic weights of the elements 2009 (IUPAC Technical Report). <i>Pure and Applied Chemistry</i>, <i>83</i>(2), 359–396. https://doi.org/10.1351/pac-rep-10-09-14 <a href="https://doi.org/10.1351/PAC-REP-10-09-14">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1351/PAC-REP-10-09-14">Scholia</a></div>
</div>

## Turtle

This resource as a file: [Nitrogen.ttl](Nitrogen.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 skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix unit: <http://qudt.org/vocab/unit/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

ciaaw:note-m a ciaaw:Footnote ;
    skos:definition "Modified isotopic compositions may be found in commercially available material because the material has been subjected to some undisclosed or inadvertent isotopic fractionation. Substantial deviations in atomic weight of the element from that given in the table can occur."@en ;
    skos:notation "m" .

ciaaw_draft:AW-N-standard-1902 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-N-standard-1907 ;
    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:Nitrogen ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 14.04 ] .

ciaaw_draft:AW-N-standard a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:issued "2009"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-N-standard-1999 ;
    dcterms:source <https://doi.org/10.1351/PAC-REP-10-09-14> ;
    ciaaw:footnote ciaaw:note-m ;
    ciaaw:ofElement element:Nitrogen ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:lowerBound 14.00643 ;
            qudt:upperBound 14.00728 ;
            ciaaw:significantFiguresLower 7 ;
            ciaaw:significantFiguresUpper 7 ] .

ciaaw_draft:AW-N-standard-1907 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-N-standard-1920 ;
    dcterms:issued "1907"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-N-standard-1902 ;
    dcterms:source <https://doi.org/10.1021/ja01956a001> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Nitrogen ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 14.01 ] .

ciaaw_draft:AW-N-standard-1920 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-N-standard-1961 ;
    dcterms:issued "1920"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-N-standard-1907 ;
    dcterms:source <https://doi.org/10.1021/ja02233a600> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Nitrogen ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 14.008 ] .

ciaaw_draft:AW-N-standard-1961 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-N-standard-1969 ;
    dcterms:issued "1961"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-N-standard-1920 ;
    dcterms:source <https://doi.org/10.1021/ja00881a001> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Nitrogen ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 14.0067 ] .

ciaaw_draft:AW-N-standard-1969 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-N-standard-1985 ;
    dcterms:issued "1969"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-N-standard-1961 ;
    dcterms:source <https://doi.org/10.1351/pac197021010091> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Nitrogen ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 14.0067 ;
            qudt:standardUncertainty 0.0001 ;
            ciaaw:significantFigures 6 ;
            ciaaw:significantFiguresUncertainty 1 ] .

ciaaw_draft:AW-N-standard-1985 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-N-standard-1999 ;
    dcterms:issued "1985"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-N-standard-1969 ;
    dcterms:source <https://doi.org/10.1351/pac198658121677> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Nitrogen ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 14.00674 ;
            qudt:standardUncertainty 0.00007 ;
            ciaaw:significantFigures 7 ;
            ciaaw:significantFiguresUncertainty 1 ] .

ciaaw_draft:AW-N-standard-1999 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-N-standard ;
    dcterms:issued "1999"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-N-standard-1985 ;
    dcterms:source <https://doi.org/10.1351/pac200173040667> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Nitrogen ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 14.0067 ;
            qudt:standardUncertainty 0.0002 ;
            ciaaw:significantFigures 6 ;
            ciaaw:significantFiguresUncertainty 1 ] .

element:Nitrogen a chemrof:ChemicalElement ;
    rdfs:label "nitrogen"@en ;
    ciaaw:currentStandardAtomicWeight ciaaw_draft:AW-N-standard ;
    ciaaw:hasDeclaration ciaaw_draft:AW-N-standard,
        ciaaw_draft:AW-N-standard-1902,
        ciaaw_draft:AW-N-standard-1907,
        ciaaw_draft:AW-N-standard-1920,
        ciaaw_draft:AW-N-standard-1961,
        ciaaw_draft:AW-N-standard-1969,
        ciaaw_draft:AW-N-standard-1985,
        ciaaw_draft:AW-N-standard-1999 ;
    ciaaw:hasIsotope ciaaw_draft:N-14,
        ciaaw_draft:N-15 ;
    ciaaw:standardAtomicWeightLower 14.00643 ;
    ciaaw:standardAtomicWeightUpper 14.00728 ;
    chemrof:atomic_number 7 ;
    chemrof:symbol "N" .
```

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