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Atomic weight

Sb · antimony

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Takeaway
  • Recommended or revised 8 times between 1902 and 2024 (first record 1902, latest revision 1993).
  • Both revisions whose previous recommendation had an uncertainty kept the new value inside the previous (expanded) range.
  • The current standard atomic weight is 121.760(1) (recommended in 1993).
0+10⁻⁵−10⁻⁵+10⁻⁴−10⁻⁴+10⁻³−10⁻³+10⁻²−10⁻²+10⁻¹−10⁻¹19001920194019601980200020201961 scale change
Relative deviation from the current (or last) value, symmetric-log axis. Bars: uncertainty (expanded range); open circles: no uncertainty; orange boxes: intervals.
Yearyear of the recommendationValue (as printed)as printed in CIAAW's table; digits in parentheses are the uncertainty (expanded range) in the last digitsNotationvalue(uncertainty), interval or no uncertaintyScalebefore 1961 oxygen = 16, from 1961 ¹²C = 12Value, ¹²C scalepre-1961 values multiplied by 15.9994/16z vs previous(new − previous) ÷ previous uncertaintyReportDOI of the CIAAW report
1902120.0no uncertaintyO=16119.995510.1007/BF01370337
1903120.2no uncertaintyO=16120.195492510.1021/ja02003a001
1925121.77no uncertaintyO=16121.7654336210.1039/CT9252700913
1931121.76no uncertaintyO=16121.75543410.1039/JR9310001617
1961121.75no uncertainty12C=12121.7510.1021/ja00881a001
1969121.75(3)value(uncertainty)12C=12121.7510.1351/pac197021010091
1989121.757(3)value(uncertainty)12C=12121.7570.23310.1351/pac199163070975
1993121.760(1)value(uncertainty)12C=12121.761.00010.1351/pac199466122423

Source: Standard atomic weights © IUPAC/CIAAW 2016–2024. Commission on Isotopic Abundances and Atomic Weights, Historical changes of standard atomic weights (compiled by J. Meija), https://www.ciaaw.org/historical-atomic-weights.htm