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

# copper

| Property | Value |
| --- | --- |
| Symbol | Cu |
| Atomic number | 29 |
| IRI | `https://hendrikborgelt.github.io/Draft_for_IUPAC_CIAAW-Isotopic-Abundances-and-Atomic-Weights/elements/Copper` |
| Wikidata | [Q753](https://www.wikidata.org/wiki/Q753) |

## Standard atomic weight

| Value | Year | Source | Status | Declaration |
| --- | --- | --- | --- | --- |
| 63.546(3) | 1969 | [10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) | Current | [`AW-Cu-standard`](../id/AW-Cu-standard.md) |
| 63.546(1) | 1965 | [10.1351/pac196918040569](https://doi.org/10.1351/pac196918040569) | Deprecated, see [`AW-Cu-standard`](../id/AW-Cu-standard.md) | [`AW-Cu-standard-1965`](../id/AW-Cu-standard-1965.md) |
| 63.54 | 1947 | [10.1039/JR9510000001](https://doi.org/10.1039/JR9510000001) | Deprecated, see [`AW-Cu-standard-1965`](../id/AW-Cu-standard-1965.md) | [`AW-Cu-standard-1947`](../id/AW-Cu-standard-1947.md) |
| 63.57 | 1909 | [10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) | Deprecated, see [`AW-Cu-standard-1947`](../id/AW-Cu-standard-1947.md) | [`AW-Cu-standard-1909`](../id/AW-Cu-standard-1909.md) |
| 63.6 | 1902 | [10.1007/BF01370337](https://doi.org/10.1007/BF01370337) | Deprecated, see [`AW-Cu-standard-1909`](../id/AW-Cu-standard-1909.md) | [`AW-Cu-standard-1902`](../id/AW-Cu-standard-1902.md) |

Notes: [r](#note-r)

## Isotopes

| A | Representative isotopic composition | Year | Source | Declaration | ChEBI | Wikidata |
| --- | --- | --- | --- | --- | --- | --- |
| [63](../id/Cu-63.md) | 0.6915(15) | — | — | [`Abundance-Cu63`](../id/Abundance-Cu63.md) | — | [Q3031418](https://www.wikidata.org/wiki/Q3031418) |
| [65](../id/Cu-65.md) | 0.3085(15) | — | — | [`Abundance-Cu65`](../id/Abundance-Cu65.md) | — | [Q2557191](https://www.wikidata.org/wiki/Q2557191) |

Notes: [r](#note-r)

## Notes

<a id="note-r"></a>**r** Range in isotopic composition of normal terrestrial material prevents a more precise standard atomic weight being given; the tabulated value and uncertainty should be applicable to normal material.

## Bibliography

<div class="csl-bib-body">
<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">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">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">International atomic weights, 1949. (1951). <i>Journal of the Chemical Society (Resumed)</i>, 1. https://doi.org/10.1039/jr9510000001 <a href="https://doi.org/10.1039/JR9510000001">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1039/JR9510000001">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: [Copper.ttl](Copper.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-r a ciaaw:Footnote ;
    skos:definition "Range in isotopic composition of normal terrestrial material prevents a more precise standard atomic weight being given; the tabulated value and uncertainty should be applicable to normal material."@en ;
    skos:notation "r" .

ciaaw_draft:AW-Cu-standard-1902 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Cu-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:Copper ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 63.6 ] .

ciaaw_draft:AW-Cu-standard a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:issued "1969"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Cu-standard-1965 ;
    dcterms:source <https://doi.org/10.1351/pac197021010091> ;
    ciaaw:footnote ciaaw:note-r ;
    ciaaw:ofElement element:Copper ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 63.546 ;
            qudt:standardUncertainty 0.003 ;
            ciaaw:significantFigures 5 ;
            ciaaw:significantFiguresUncertainty 1 ] .

ciaaw_draft:AW-Cu-standard-1909 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Cu-standard-1947 ;
    dcterms:issued "1909"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Cu-standard-1902 ;
    dcterms:source <https://doi.org/10.1021/ja01931a001> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Copper ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 63.57 ] .

ciaaw_draft:AW-Cu-standard-1947 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Cu-standard-1965 ;
    dcterms:issued "1947"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Cu-standard-1909 ;
    dcterms:source <https://doi.org/10.1039/JR9510000001> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Copper ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 63.54 ] .

ciaaw_draft:AW-Cu-standard-1965 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Cu-standard ;
    dcterms:issued "1965"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Cu-standard-1947 ;
    dcterms:source <https://doi.org/10.1351/pac196918040569> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Copper ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 63.546 ;
            qudt:standardUncertainty 0.001 ;
            ciaaw:significantFigures 5 ;
            ciaaw:significantFiguresUncertainty 1 ] .

element:Copper a chemrof:ChemicalElement ;
    rdfs:label "copper"@en ;
    ciaaw:currentStandardAtomicWeight ciaaw_draft:AW-Cu-standard ;
    ciaaw:hasDeclaration ciaaw_draft:AW-Cu-standard,
        ciaaw_draft:AW-Cu-standard-1902,
        ciaaw_draft:AW-Cu-standard-1909,
        ciaaw_draft:AW-Cu-standard-1947,
        ciaaw_draft:AW-Cu-standard-1965 ;
    ciaaw:hasIsotope ciaaw_draft:Cu-63,
        ciaaw_draft:Cu-65 ;
    ciaaw:standardAtomicWeightUncertainty 0.003 ;
    ciaaw:standardAtomicWeightValue 63.546 ;
    chemrof:atomic_number 29 ;
    chemrof:symbol "Cu" .
```

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