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

# Isotopic abundance of krypton-84

| Property | Value |
| --- | --- |
| About | [krypton-84](Kr-84.md) |
| Value | 0.569 87(15) |
| Year | — |
| Source | — |
| Status | Current |
| IRI | `https://hendrikborgelt.github.io/Draft_for_IUPAC_CIAAW-Isotopic-Abundances-and-Atomic-Weights/id/Abundance-Kr84` |
| Notes | [g](#note-g) [m](#note-m) |

## 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.

<a id="note-m"></a>**m** Modified isotopic compositions may be found in commercially available material because the material has been subjected to some undisclosed or inadvertent isotopic fractionation. Substantial deviations in atomic weight of the element from that given in the table can occur.

## Turtle

This resource as a file: [Abundance-Kr84.ttl](Abundance-Kr84.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 qudt: <http://qudt.org/schema/qudt/> .
@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:note-m a ciaaw:Footnote ;
    skos:definition "Modified isotopic compositions may be found in commercially available material because the material has been subjected to some undisclosed or inadvertent isotopic fractionation. Substantial deviations in atomic weight of the element from that given in the table can occur."@en ;
    skos:notation "m" .

ciaaw_draft:Kr-84 ciaaw:currentAbundance ciaaw_draft:Abundance-Kr84 ;
    ciaaw:hasDeclaration ciaaw_draft:Abundance-Kr84 .

ciaaw_draft:Abundance-Kr84 a ciaaw:IsotopicAbundanceDeclaration ;
    ciaaw:footnote ciaaw:note-g,
        ciaaw:note-m ;
    ciaaw:ofIsotope ciaaw_draft:Kr-84 ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 0.56987 ;
            qudt:standardUncertainty 0.00015 ;
            ciaaw:significantFigures 5 ;
            ciaaw:significantFiguresUncertainty 2 ] .
```