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

# Standard atomic weight of potassium

| Property | Value |
| --- | --- |
| About | [potassium](../elements/Potassium.md) |
| Value | 39.0983(1) |
| Year | 1979 |
| Source | [10.1351/pac198052102349](https://doi.org/10.1351/pac198052102349) |
| Status | Current |
| IRI | `https://hendrikborgelt.github.io/Draft_for_IUPAC_CIAAW-Isotopic-Abundances-and-Atomic-Weights/id/AW-K-standard` |

## Turtle

This resource as a file: [AW-K-standard.ttl](AW-K-standard.ttl)

```turtle
# Prototype: a suggestion, not an official CIAAW or IUPAC record. Official values are at https://ciaaw.org

@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 qudt: <http://qudt.org/schema/qudt/> .
@prefix unit: <http://qudt.org/vocab/unit/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

element:Potassium ciaaw:currentStandardAtomicWeight ciaaw_draft:AW-K-standard ;
    ciaaw:hasDeclaration ciaaw_draft:AW-K-standard .

ciaaw_draft:AW-K-standard-1975 dcterms:isReplacedBy ciaaw_draft:AW-K-standard .

ciaaw_draft:AW-K-standard a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:issued "1979"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-K-standard-1975 ;
    dcterms:source <https://doi.org/10.1351/pac198052102349> ;
    ciaaw:ofElement element:Potassium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 39.0983 ;
            qudt:standardUncertainty 0.0001 ;
            ciaaw:significantFigures 6 ;
            ciaaw:significantFiguresUncertainty 1 ] .
```