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

# tungsten

| Property | Value |
| --- | --- |
| Symbol | W |
| Atomic number | 74 |
| IRI | `https://hendrikborgelt.github.io/Draft_for_IUPAC_CIAAW-Isotopic-Abundances-and-Atomic-Weights/elements/Tungsten` |
| Wikidata | [Q743](https://www.wikidata.org/wiki/Q743) |

## Standard atomic weight

| Value | Year | Source | Status | Declaration |
| --- | --- | --- | --- | --- |
| 183.84(1) | 1991 | [10.1351/pac199264101519](https://doi.org/10.1351/pac199264101519) | Current | [`AW-W-standard`](../id/AW-W-standard.md) |
| 183.85(3) | 1969 | [10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) | Deprecated, see [`AW-W-standard`](../id/AW-W-standard.md) | [`AW-W-standard-1969`](../id/AW-W-standard-1969.md) |
| 183.85 | 1961 | [10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) | Deprecated, see [`AW-W-standard-1969`](../id/AW-W-standard-1969.md) | [`AW-W-standard-1961`](../id/AW-W-standard-1961.md) |
| 183.86 | 1955 | [10.1021/ja01595a001](https://doi.org/10.1021/ja01595a001) | Deprecated, see [`AW-W-standard-1961`](../id/AW-W-standard-1961.md) | [`AW-W-standard-1955`](../id/AW-W-standard-1955.md) |
| 183.92 | 1938 | [10.1039/JR9380001101](https://doi.org/10.1039/JR9380001101) | Deprecated, see [`AW-W-standard-1955`](../id/AW-W-standard-1955.md) | [`AW-W-standard-1938`](../id/AW-W-standard-1938.md) |
| 184 | 1902 | [10.1007/BF01370337](https://doi.org/10.1007/BF01370337) | Deprecated, see [`AW-W-standard-1938`](../id/AW-W-standard-1938.md) | [`AW-W-standard-1902`](../id/AW-W-standard-1902.md) |


## Isotopes

| A | Representative isotopic composition | Year | Source | Declaration | ChEBI | Wikidata |
| --- | --- | --- | --- | --- | --- | --- |
| [180](../id/W-180.md) | 0.0012(1) | — | — | [`Abundance-W180`](../id/Abundance-W180.md) | — | [Q18882857](https://www.wikidata.org/wiki/Q18882857) |
| [182](../id/W-182.md) | 0.2650(16) | — | — | [`Abundance-W182`](../id/Abundance-W182.md) | — | [Q18882864](https://www.wikidata.org/wiki/Q18882864) |
| [183](../id/W-183.md) | 0.1431(4) | — | — | [`Abundance-W183`](../id/Abundance-W183.md) | — | [Q18882866](https://www.wikidata.org/wiki/Q18882866) |
| [184](../id/W-184.md) | 0.3064(2) | — | — | [`Abundance-W184`](../id/Abundance-W184.md) | — | [Q18882868](https://www.wikidata.org/wiki/Q18882868) |
| [186](../id/W-186.md) | 0.2843(19) | — | — | [`Abundance-W186`](../id/Abundance-W186.md) | — | [Q18882871](https://www.wikidata.org/wiki/Q18882871) |

## 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 1991. (1992). <i>Pure and Applied Chemistry</i>, <i>64</i>(10), 1519–1534. https://doi.org/10.1351/pac199264101519 <a href="https://doi.org/10.1351/pac199264101519">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1351/pac199264101519">Scholia</a></div>
<div class="csl-entry">Baxter, G. P., Hönigschmid, O., &#38; Lebeau, P. (1938). Eighth Report of the Committee on Atomic Weights of the International Union of Chemistry. <i>J. Chem. Soc.</i>, <i>0</i>(0), 1101–1109. https://doi.org/10.1039/jr9380001101 <a href="https://doi.org/10.1039/JR9380001101">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1039/JR9380001101">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">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">Wichers, E. (1956). Report on Atomic Weights for 1954-55. <i>Journal of the American Chemical Society</i>, <i>78</i>(14), 3235–3240. https://doi.org/10.1021/ja01595a001 <a href="https://doi.org/10.1021/ja01595a001">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1021/ja01595a001">Scholia</a></div>
</div>

## Turtle

This resource as a file: [Tungsten.ttl](Tungsten.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-W-standard-1902 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-W-standard-1938 ;
    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:Tungsten ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 184.0 ] .

ciaaw_draft:AW-W-standard a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:issued "1991"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-W-standard-1969 ;
    dcterms:source <https://doi.org/10.1351/pac199264101519> ;
    ciaaw:ofElement element:Tungsten ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 183.84 ;
            qudt:standardUncertainty 0.01 ;
            ciaaw:significantFigures 5 ;
            ciaaw:significantFiguresUncertainty 1 ] .

ciaaw_draft:AW-W-standard-1938 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-W-standard-1955 ;
    dcterms:issued "1938"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-W-standard-1902 ;
    dcterms:source <https://doi.org/10.1039/JR9380001101> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Tungsten ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 183.92 ] .

ciaaw_draft:AW-W-standard-1955 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-W-standard-1961 ;
    dcterms:issued "1955"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-W-standard-1938 ;
    dcterms:source <https://doi.org/10.1021/ja01595a001> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Tungsten ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 183.86 ] .

ciaaw_draft:AW-W-standard-1961 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-W-standard-1969 ;
    dcterms:issued "1961"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-W-standard-1955 ;
    dcterms:source <https://doi.org/10.1021/ja00881a001> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Tungsten ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 183.85 ] .

ciaaw_draft:AW-W-standard-1969 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-W-standard ;
    dcterms:issued "1969"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-W-standard-1961 ;
    dcterms:source <https://doi.org/10.1351/pac197021010091> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Tungsten ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 183.85 ;
            qudt:standardUncertainty 0.03 ;
            ciaaw:significantFigures 5 ;
            ciaaw:significantFiguresUncertainty 1 ] .

element:Tungsten a chemrof:ChemicalElement ;
    rdfs:label "tungsten"@en ;
    ciaaw:currentStandardAtomicWeight ciaaw_draft:AW-W-standard ;
    ciaaw:hasDeclaration ciaaw_draft:AW-W-standard,
        ciaaw_draft:AW-W-standard-1902,
        ciaaw_draft:AW-W-standard-1938,
        ciaaw_draft:AW-W-standard-1955,
        ciaaw_draft:AW-W-standard-1961,
        ciaaw_draft:AW-W-standard-1969 ;
    ciaaw:hasIsotope ciaaw_draft:W-180,
        ciaaw_draft:W-182,
        ciaaw_draft:W-183,
        ciaaw_draft:W-184,
        ciaaw_draft:W-186 ;
    ciaaw:standardAtomicWeightUncertainty 0.01 ;
    ciaaw:standardAtomicWeightValue 183.84 ;
    chemrof:atomic_number 74 ;
    chemrof:symbol "W" .
```

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