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

# bromine

| Property | Value |
| --- | --- |
| Symbol | Br |
| Atomic number | 35 |
| IRI | `https://hendrikborgelt.github.io/Draft_for_IUPAC_CIAAW-Isotopic-Abundances-and-Atomic-Weights/elements/Bromine` |
| Wikidata | [Q879](https://www.wikidata.org/wiki/Q879) |

## Standard atomic weight

| Value | Year | Source | Status | Declaration |
| --- | --- | --- | --- | --- |
| [79.901, 79.907] | 2011 | [10.1351/PAC-REP-13-03-02](https://doi.org/10.1351/PAC-REP-13-03-02) | Current | [`AW-Br-standard`](../id/AW-Br-standard.md) |
| 79.904(1) | 1965 | [10.1351/pac196918040569](https://doi.org/10.1351/pac196918040569) | Deprecated, see [`AW-Br-standard`](../id/AW-Br-standard.md) | [`AW-Br-standard-1965`](../id/AW-Br-standard-1965.md) |
| 79.909(2) | 1961 | [10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) | Deprecated, see [`AW-Br-standard-1965`](../id/AW-Br-standard-1965.md) | [`AW-Br-standard-1961`](../id/AW-Br-standard-1961.md) |
| 79.916 | 1925 | [10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) | Deprecated, see [`AW-Br-standard-1961`](../id/AW-Br-standard-1961.md) | [`AW-Br-standard-1925`](../id/AW-Br-standard-1925.md) |
| 79.92 | 1909 | [10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) | Deprecated, see [`AW-Br-standard-1925`](../id/AW-Br-standard-1925.md) | [`AW-Br-standard-1909`](../id/AW-Br-standard-1909.md) |
| 79.96 | 1902 | [10.1007/BF01370337](https://doi.org/10.1007/BF01370337) | Deprecated, see [`AW-Br-standard-1909`](../id/AW-Br-standard-1909.md) | [`AW-Br-standard-1902`](../id/AW-Br-standard-1902.md) |


## Isotopes

| A | Representative isotopic composition | Year | Source | Declaration | ChEBI | Wikidata |
| --- | --- | --- | --- | --- | --- | --- |
| [79](../id/Br-79.md) | [0.505, 0.508] | — | — | [`Abundance-Br79`](../id/Abundance-Br79.md) | — | [Q2311128](https://www.wikidata.org/wiki/Q2311128) |
| [81](../id/Br-81.md) | [0.492, 0.495] | — | — | [`Abundance-Br81`](../id/Abundance-Br81.md) | — | [Q2342633](https://www.wikidata.org/wiki/Q2342633) |

## 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 Elements. (1969). <i>Pure and Applied Chemistry</i>, <i>18</i>(4), 569–580. https://doi.org/10.1351/pac196918040569 <a href="https://doi.org/10.1351/pac196918040569">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1351/pac196918040569">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">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., Holden, N., Coplen, T. B., Böhlke, J. K., Berglund, M., Brand, W. A., De Bièvre, P., Gröning, M., Loss, R. D., Meija, J., Hirata, T., Prohaska, T., Schoenberg, R., O’Connor, G., Walczyk, T., Yoneda, S., &#38; Zhu, X.-K. (2013). Atomic weights of the elements 2011 (IUPAC Technical                     Report). <i>Pure and Applied Chemistry</i>, <i>85</i>(5), 1047–1078. https://doi.org/10.1351/pac-rep-13-03-02 <a href="https://doi.org/10.1351/PAC-REP-13-03-02">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1351/PAC-REP-13-03-02">Scholia</a></div>
</div>

## Turtle

This resource as a file: [Bromine.ttl](Bromine.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-Br-standard-1902 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Br-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:Bromine ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 79.96 ] .

ciaaw_draft:AW-Br-standard a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:issued "2011"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Br-standard-1965 ;
    dcterms:source <https://doi.org/10.1351/PAC-REP-13-03-02> ;
    ciaaw:ofElement element:Bromine ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:lowerBound 79.901 ;
            qudt:upperBound 79.907 ;
            ciaaw:significantFiguresLower 5 ;
            ciaaw:significantFiguresUpper 5 ] .

ciaaw_draft:AW-Br-standard-1909 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Br-standard-1925 ;
    dcterms:issued "1909"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Br-standard-1902 ;
    dcterms:source <https://doi.org/10.1021/ja01931a001> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Bromine ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 79.92 ] .

ciaaw_draft:AW-Br-standard-1925 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Br-standard-1961 ;
    dcterms:issued "1925"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Br-standard-1909 ;
    dcterms:source <https://doi.org/10.1039/CT9252700913> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Bromine ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 79.916 ] .

ciaaw_draft:AW-Br-standard-1961 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Br-standard-1965 ;
    dcterms:issued "1961"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Br-standard-1925 ;
    dcterms:source <https://doi.org/10.1021/ja00881a001> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Bromine ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 79.909 ;
            qudt:standardUncertainty 0.002 ;
            ciaaw:significantFigures 5 ;
            ciaaw:significantFiguresUncertainty 1 ] .

ciaaw_draft:AW-Br-standard-1965 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Br-standard ;
    dcterms:issued "1965"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Br-standard-1961 ;
    dcterms:source <https://doi.org/10.1351/pac196918040569> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Bromine ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 79.904 ;
            qudt:standardUncertainty 0.001 ;
            ciaaw:significantFigures 5 ;
            ciaaw:significantFiguresUncertainty 1 ] .

element:Bromine a chemrof:ChemicalElement ;
    rdfs:label "bromine"@en ;
    ciaaw:currentStandardAtomicWeight ciaaw_draft:AW-Br-standard ;
    ciaaw:hasDeclaration ciaaw_draft:AW-Br-standard,
        ciaaw_draft:AW-Br-standard-1902,
        ciaaw_draft:AW-Br-standard-1909,
        ciaaw_draft:AW-Br-standard-1925,
        ciaaw_draft:AW-Br-standard-1961,
        ciaaw_draft:AW-Br-standard-1965 ;
    ciaaw:hasIsotope ciaaw_draft:Br-79,
        ciaaw_draft:Br-81 ;
    ciaaw:standardAtomicWeightLower 79.901 ;
    ciaaw:standardAtomicWeightUpper 79.907 ;
    chemrof:atomic_number 35 ;
    chemrof:symbol "Br" .
```

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