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

# palladium

| Property | Value |
| --- | --- |
| Symbol | Pd |
| Atomic number | 46 |
| IRI | `https://hendrikborgelt.github.io/Draft_for_IUPAC_CIAAW-Isotopic-Abundances-and-Atomic-Weights/elements/Palladium` |
| Wikidata | [Q1089](https://www.wikidata.org/wiki/Q1089) |

## Standard atomic weight

| Value | Year | Source | Status | Declaration |
| --- | --- | --- | --- | --- |
| 106.42(1) | 1979 | [10.1351/pac198052102349](https://doi.org/10.1351/pac198052102349) | Current | [`AW-Pd-standard`](../id/AW-Pd-standard.md) |
| 106.4(1) | 1969 | [10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) | Deprecated, see [`AW-Pd-standard`](../id/AW-Pd-standard.md) | [`AW-Pd-standard-1969`](../id/AW-Pd-standard-1969.md) |
| 106.4 | 1955 | [10.1021/ja01595a001](https://doi.org/10.1021/ja01595a001) | Deprecated, see [`AW-Pd-standard-1969`](../id/AW-Pd-standard-1969.md) | [`AW-Pd-standard-1955`](../id/AW-Pd-standard-1955.md) |
| 106.7 | 1909 | [10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) | Deprecated, see [`AW-Pd-standard-1955`](../id/AW-Pd-standard-1955.md) | [`AW-Pd-standard-1909`](../id/AW-Pd-standard-1909.md) |
| 106.5 | 1903 | [10.1021/ja02003a001](https://doi.org/10.1021/ja02003a001) | Deprecated, see [`AW-Pd-standard-1909`](../id/AW-Pd-standard-1909.md) | [`AW-Pd-standard-1903`](../id/AW-Pd-standard-1903.md) |
| 106 | 1902 | [10.1007/BF01370337](https://doi.org/10.1007/BF01370337) | Deprecated, see [`AW-Pd-standard-1903`](../id/AW-Pd-standard-1903.md) | [`AW-Pd-standard-1902`](../id/AW-Pd-standard-1902.md) |

Notes: [g](#note-g)

## Isotopes

| A | Representative isotopic composition | Year | Source | Declaration | ChEBI | Wikidata |
| --- | --- | --- | --- | --- | --- | --- |
| [102](../id/Pd-102.md) | 0.0102(1) | — | — | [`Abundance-Pd102`](../id/Abundance-Pd102.md) | — | [Q2177150](https://www.wikidata.org/wiki/Q2177150) |
| [104](../id/Pd-104.md) | 0.1114(8) | — | — | [`Abundance-Pd104`](../id/Abundance-Pd104.md) | — | [Q1978569](https://www.wikidata.org/wiki/Q1978569) |
| [105](../id/Pd-105.md) | 0.2233(8) | — | — | [`Abundance-Pd105`](../id/Abundance-Pd105.md) | — | [Q2692839](https://www.wikidata.org/wiki/Q2692839) |
| [106](../id/Pd-106.md) | 0.2733(3) | — | — | [`Abundance-Pd106`](../id/Abundance-Pd106.md) | — | [Q2541204](https://www.wikidata.org/wiki/Q2541204) |
| [108](../id/Pd-108.md) | 0.2646(9) | — | — | [`Abundance-Pd108`](../id/Abundance-Pd108.md) | — | [Q2611037](https://www.wikidata.org/wiki/Q2611037) |
| [110](../id/Pd-110.md) | 0.1172(9) | — | — | [`Abundance-Pd110`](../id/Abundance-Pd110.md) | — | [Q2890340](https://www.wikidata.org/wiki/Q2890340) |

Notes: [g](#note-g)

## Notes

<a id="note-g"></a>**g** Geological and biological materials are known in which the element has an isotopic composition outside the limits for normal material. The difference between the atomic weight of the element in such materials and that given in the table may exceed the stated uncertainty.

## 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 1979. (1980). <i>Pure and Applied Chemistry</i>, <i>52</i>(10), 2349–2384. https://doi.org/10.1351/pac198052102349 <a href="https://doi.org/10.1351/pac198052102349">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1351/pac198052102349">Scholia</a></div>
<div class="csl-entry">Clarke, F. W. (1903). REPORT OF THE INTERNATIONAL COMMITTEE ON ATOMIC WEIGHTS. <i>Journal of the American Chemical Society</i>, <i>25</i>(1), 1–5. https://doi.org/10.1021/ja02003a001 <a href="https://doi.org/10.1021/ja02003a001">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1021/ja02003a001">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">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: [Palladium.ttl](Palladium.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-g a ciaaw:Footnote ;
    skos:definition "Geological and biological materials are known in which the element has an isotopic composition outside the limits for normal material. The difference between the atomic weight of the element in such materials and that given in the table may exceed the stated uncertainty."@en ;
    skos:notation "g" .

ciaaw_draft:AW-Pd-standard-1902 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Pd-standard-1903 ;
    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:Palladium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 106.0 ] .

ciaaw_draft:AW-Pd-standard a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:issued "1979"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Pd-standard-1969 ;
    dcterms:source <https://doi.org/10.1351/pac198052102349> ;
    ciaaw:footnote ciaaw:note-g ;
    ciaaw:ofElement element:Palladium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 106.42 ;
            qudt:standardUncertainty 0.01 ;
            ciaaw:significantFigures 5 ;
            ciaaw:significantFiguresUncertainty 1 ] .

ciaaw_draft:AW-Pd-standard-1903 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Pd-standard-1909 ;
    dcterms:issued "1903"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Pd-standard-1902 ;
    dcterms:source <https://doi.org/10.1021/ja02003a001> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Palladium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 106.5 ] .

ciaaw_draft:AW-Pd-standard-1909 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Pd-standard-1955 ;
    dcterms:issued "1909"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Pd-standard-1903 ;
    dcterms:source <https://doi.org/10.1021/ja01931a001> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Palladium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 106.7 ] .

ciaaw_draft:AW-Pd-standard-1955 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Pd-standard-1969 ;
    dcterms:issued "1955"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Pd-standard-1909 ;
    dcterms:source <https://doi.org/10.1021/ja01595a001> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Palladium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 106.4 ] .

ciaaw_draft:AW-Pd-standard-1969 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Pd-standard ;
    dcterms:issued "1969"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Pd-standard-1955 ;
    dcterms:source <https://doi.org/10.1351/pac197021010091> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Palladium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 106.4 ;
            qudt:standardUncertainty 0.1 ;
            ciaaw:significantFigures 4 ;
            ciaaw:significantFiguresUncertainty 1 ] .

element:Palladium a chemrof:ChemicalElement ;
    rdfs:label "palladium"@en ;
    ciaaw:currentStandardAtomicWeight ciaaw_draft:AW-Pd-standard ;
    ciaaw:hasDeclaration ciaaw_draft:AW-Pd-standard,
        ciaaw_draft:AW-Pd-standard-1902,
        ciaaw_draft:AW-Pd-standard-1903,
        ciaaw_draft:AW-Pd-standard-1909,
        ciaaw_draft:AW-Pd-standard-1955,
        ciaaw_draft:AW-Pd-standard-1969 ;
    ciaaw:hasIsotope ciaaw_draft:Pd-102,
        ciaaw_draft:Pd-104,
        ciaaw_draft:Pd-105,
        ciaaw_draft:Pd-106,
        ciaaw_draft:Pd-108,
        ciaaw_draft:Pd-110 ;
    ciaaw:standardAtomicWeightUncertainty 0.01 ;
    ciaaw:standardAtomicWeightValue 106.42 ;
    chemrof:atomic_number 46 ;
    chemrof:symbol "Pd" .
```

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