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

# gallium

| Property | Value |
| --- | --- |
| Symbol | Ga |
| Atomic number | 31 |
| IRI | `https://hendrikborgelt.github.io/Draft_for_IUPAC_CIAAW-Isotopic-Abundances-and-Atomic-Weights/elements/Gallium` |
| Wikidata | [Q861](https://www.wikidata.org/wiki/Q861) |

## Standard atomic weight

| Value | Year | Source | Status | Declaration |
| --- | --- | --- | --- | --- |
| 69.723(1) | 1987 | [10.1351/pac198860060841](https://doi.org/10.1351/pac198860060841) | Current | [`AW-Ga-standard`](../id/AW-Ga-standard.md) |
| 69.723(4) | 1983 | [10.1351/pac198456060653](https://doi.org/10.1351/pac198456060653) | Deprecated, see [`AW-Ga-standard`](../id/AW-Ga-standard.md) | [`AW-Ga-standard-1983`](../id/AW-Ga-standard-1983.md) |
| 69.72(1) | 1969 | [10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) | Deprecated, see [`AW-Ga-standard-1983`](../id/AW-Ga-standard-1983.md) | [`AW-Ga-standard-1969`](../id/AW-Ga-standard-1969.md) |
| 69.72 | 1925 | [10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) | Deprecated, see [`AW-Ga-standard-1969`](../id/AW-Ga-standard-1969.md) | [`AW-Ga-standard-1925`](../id/AW-Ga-standard-1925.md) |
| 70.1 | 1920 | [10.1021/ja02233a600](https://doi.org/10.1021/ja02233a600) | Deprecated, see [`AW-Ga-standard-1925`](../id/AW-Ga-standard-1925.md) | [`AW-Ga-standard-1920`](../id/AW-Ga-standard-1920.md) |
| 69.9 | 1909 | [10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) | Deprecated, see [`AW-Ga-standard-1920`](../id/AW-Ga-standard-1920.md) | [`AW-Ga-standard-1909`](../id/AW-Ga-standard-1909.md) |
| 70 | 1902 | [10.1007/BF01370337](https://doi.org/10.1007/BF01370337) | Deprecated, see [`AW-Ga-standard-1909`](../id/AW-Ga-standard-1909.md) | [`AW-Ga-standard-1902`](../id/AW-Ga-standard-1902.md) |


## Isotopes

| A | Representative isotopic composition | Year | Source | Declaration | ChEBI | Wikidata |
| --- | --- | --- | --- | --- | --- | --- |
| [69](../id/Ga-69.md) | 0.601 08(50) | — | — | [`Abundance-Ga69`](../id/Abundance-Ga69.md) | — | [Q4738844](https://www.wikidata.org/wiki/Q4738844) |
| [71](../id/Ga-71.md) | 0.398 92(50) | — | — | [`Abundance-Ga71`](../id/Abundance-Ga71.md) | — | [Q2311889](https://www.wikidata.org/wiki/Q2311889) |

## Bibliography

<div class="csl-bib-body">
<div class="csl-entry">Aston, F. W., Baxter, G. P., Brauner, B., Debierne, A., Leduc, A., Richards, T. W., Soddy, F., &#38; Urbain, G. (1925). Second Report of the International Committee of the International Union of Pure and Applied Chemistry on the chemical elements. International atomic weights, 1925. <i>Journal of the Chemical Society, Transactions</i>, <i>127</i>, 913. https://doi.org/10.1039/ct9252700913 <a href="https://doi.org/10.1039/CT9252700913">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1039/CT9252700913">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">Atomic weights of the elements 1987. (1988). <i>Pure and Applied Chemistry</i>, <i>60</i>(6), 841–854. https://doi.org/10.1351/pac198860060841 <a href="https://doi.org/10.1351/pac198860060841">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1351/pac198860060841">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">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">Holden, N. E., &#38; Martin, R. L. (1984). Atomic weights of the elements 1983. <i>Pure and Applied Chemistry</i>, <i>56</i>(6), 653–674. https://doi.org/10.1351/pac198456060653 <a href="https://doi.org/10.1351/pac198456060653">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1351/pac198456060653">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: [Gallium.ttl](Gallium.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-Ga-standard-1902 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Ga-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:Gallium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 70.0 ] .

ciaaw_draft:AW-Ga-standard a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:issued "1987"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Ga-standard-1983 ;
    dcterms:source <https://doi.org/10.1351/pac198860060841> ;
    ciaaw:ofElement element:Gallium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 69.723 ;
            qudt:standardUncertainty 0.001 ;
            ciaaw:significantFigures 5 ;
            ciaaw:significantFiguresUncertainty 1 ] .

ciaaw_draft:AW-Ga-standard-1909 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Ga-standard-1920 ;
    dcterms:issued "1909"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Ga-standard-1902 ;
    dcterms:source <https://doi.org/10.1021/ja01931a001> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Gallium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 69.9 ] .

ciaaw_draft:AW-Ga-standard-1920 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Ga-standard-1925 ;
    dcterms:issued "1920"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Ga-standard-1909 ;
    dcterms:source <https://doi.org/10.1021/ja02233a600> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Gallium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 70.1 ] .

ciaaw_draft:AW-Ga-standard-1925 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Ga-standard-1969 ;
    dcterms:issued "1925"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Ga-standard-1920 ;
    dcterms:source <https://doi.org/10.1039/CT9252700913> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Gallium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 69.72 ] .

ciaaw_draft:AW-Ga-standard-1969 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Ga-standard-1983 ;
    dcterms:issued "1969"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Ga-standard-1925 ;
    dcterms:source <https://doi.org/10.1351/pac197021010091> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Gallium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 69.72 ;
            qudt:standardUncertainty 0.01 ;
            ciaaw:significantFigures 4 ;
            ciaaw:significantFiguresUncertainty 1 ] .

ciaaw_draft:AW-Ga-standard-1983 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Ga-standard ;
    dcterms:issued "1983"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Ga-standard-1969 ;
    dcterms:source <https://doi.org/10.1351/pac198456060653> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Gallium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 69.723 ;
            qudt:standardUncertainty 0.004 ;
            ciaaw:significantFigures 5 ;
            ciaaw:significantFiguresUncertainty 1 ] .

element:Gallium a chemrof:ChemicalElement ;
    rdfs:label "gallium"@en ;
    ciaaw:currentStandardAtomicWeight ciaaw_draft:AW-Ga-standard ;
    ciaaw:hasDeclaration ciaaw_draft:AW-Ga-standard,
        ciaaw_draft:AW-Ga-standard-1902,
        ciaaw_draft:AW-Ga-standard-1909,
        ciaaw_draft:AW-Ga-standard-1920,
        ciaaw_draft:AW-Ga-standard-1925,
        ciaaw_draft:AW-Ga-standard-1969,
        ciaaw_draft:AW-Ga-standard-1983 ;
    ciaaw:hasIsotope ciaaw_draft:Ga-69,
        ciaaw_draft:Ga-71 ;
    ciaaw:standardAtomicWeightUncertainty 0.001 ;
    ciaaw:standardAtomicWeightValue 69.723 ;
    chemrof:atomic_number 31 ;
    chemrof:symbol "Ga" .
```

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