PROTOTYPE: a suggestion, not an official CIAAW or IUPAC page. Official values are at ciaaw.org.
IUPAC Project 2019-020-2-024Linked-data suggestion · unofficial prototype

selenium

Property Value
Symbol Se
Atomic number 34
IRI https://hendrikborgelt.github.io/Draft_for_IUPAC_CIAAW-Isotopic-Abundances-and-Atomic-Weights/elements/Selenium
Wikidata Q876

Standard atomic weight

Value Year Source Status Declaration
78.971(8) 2013 10.1515/pac-2015-0305 Current AW-Se-standard
78.96(3) 1969 10.1351/pac197021010091 Deprecated, see AW-Se-standard AW-Se-standard-1969
78.96 1934 10.1039/JR9340000499 Deprecated, see AW-Se-standard-1969 AW-Se-standard-1934
79.2 1903 10.1021/ja02003a001 Deprecated, see AW-Se-standard-1934 AW-Se-standard-1903
79.1 1902 10.1007/BF01370337 Deprecated, see AW-Se-standard-1903 AW-Se-standard-1902

Notes: r

Isotopes

A Representative isotopic composition Year Source Declaration ChEBI Wikidata
74 0.0086(3) — — Abundance-Se74 — Q2806682
76 0.0923(7) — — Abundance-Se76 — Q2533598
77 0.0760(7) — — Abundance-Se77 — Q2433972
78 0.2369(22) — — Abundance-Se78 — Q1890759
80 0.4980(36) — — Abundance-Se80 — Q2387529
82 0.0882(15) — — Abundance-Se82 — Q2290353

Notes: r

Notes

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

Atomic weights of the elements 1969. (1970). Pure and Applied Chemistry, 21(1), 91–108. https://doi.org/10.1351/pac197021010091 CrossRef Scholia
Baxter, G. P., Curie, Mme. P., Lebeau, P., Hönigschmid, O., & Meyer, R. J. (1934). Fourth Report of the Committee on Atomic Weights of the International Union of Chemistry. J. Chem. Soc., 0(0), 499–512. https://doi.org/10.1039/jr9340000499 CrossRef Scholia
Clarke, F. W. (1903). REPORT OF THE INTERNATIONAL COMMITTEE ON ATOMIC WEIGHTS. Journal of the American Chemical Society, 25(1), 1–5. https://doi.org/10.1021/ja02003a001 CrossRef Scholia
Meija, J., Coplen, T. B., Berglund, M., Brand, W. A., De Bièvre, P., Gröning, M., Holden, N. E., Irrgeher, J., Loss, R. D., Walczyk, T., & Prohaska, T. (2016). Atomic weights of the elements 2013 (IUPAC Technical Report). Pure and Applied Chemistry, 88(3), 265–291. https://doi.org/10.1515/pac-2015-0305 CrossRef Scholia
Richards, Baxter, Hinrichsen, Köthner, P., & Pellini, S. (1902). Zur Festsetzung der Atomgewichte. Fresenius’ Zeitschrift für analytische Chemie, 41(2), 139–140. https://doi.org/10.1007/bf01370337 CrossRef Scholia

Turtle

This resource as a file: Selenium.ttl

# 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-Se-standard-1902 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Se-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:Selenium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 79.1 ] .

ciaaw_draft:AW-Se-standard a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:issued "2013"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Se-standard-1969 ;
    dcterms:source <https://doi.org/10.1515/pac-2015-0305> ;
    ciaaw:footnote ciaaw:note-r ;
    ciaaw:ofElement element:Selenium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 78.971 ;
            qudt:standardUncertainty 0.008 ;
            ciaaw:significantFigures 5 ;
            ciaaw:significantFiguresUncertainty 1 ] .

ciaaw_draft:AW-Se-standard-1903 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Se-standard-1934 ;
    dcterms:issued "1903"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Se-standard-1902 ;
    dcterms:source <https://doi.org/10.1021/ja02003a001> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Selenium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 79.2 ] .

ciaaw_draft:AW-Se-standard-1934 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Se-standard-1969 ;
    dcterms:issued "1934"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Se-standard-1903 ;
    dcterms:source <https://doi.org/10.1039/JR9340000499> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Selenium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 78.96 ] .

ciaaw_draft:AW-Se-standard-1969 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Se-standard ;
    dcterms:issued "1969"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Se-standard-1934 ;
    dcterms:source <https://doi.org/10.1351/pac197021010091> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Selenium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 78.96 ;
            qudt:standardUncertainty 0.03 ;
            ciaaw:significantFigures 4 ;
            ciaaw:significantFiguresUncertainty 1 ] .

element:Selenium a chemrof:ChemicalElement ;
    rdfs:label "selenium"@en ;
    ciaaw:currentStandardAtomicWeight ciaaw_draft:AW-Se-standard ;
    ciaaw:hasDeclaration ciaaw_draft:AW-Se-standard,
        ciaaw_draft:AW-Se-standard-1902,
        ciaaw_draft:AW-Se-standard-1903,
        ciaaw_draft:AW-Se-standard-1934,
        ciaaw_draft:AW-Se-standard-1969 ;
    ciaaw:hasIsotope ciaaw_draft:Se-74,
        ciaaw_draft:Se-76,
        ciaaw_draft:Se-77,
        ciaaw_draft:Se-78,
        ciaaw_draft:Se-80,
        ciaaw_draft:Se-82 ;
    ciaaw:standardAtomicWeightUncertainty 0.008 ;
    ciaaw:standardAtomicWeightValue 78.971 ;
    chemrof:atomic_number 34 ;
    chemrof:symbol "Se" .

All atomic weights · All isotopic abundances