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Atomic weight
Ag · silver
은
Takeaway
- Recommended or revised 7 times between 1902 and 2024 (first record 1902, latest revision 1985).
- All 3 revisions whose previous recommendation had an uncertainty kept the new value inside the previous (expanded) range.
- The current standard atomic weight is 107.8682(2) (recommended in 1985).
| Yearyear of the recommendation | Value (as printed)as printed in CIAAW's table; digits in parentheses are the uncertainty (expanded range) in the last digits | Notationvalue(uncertainty), interval or no uncertainty | Scalebefore 1961 oxygen = 16, from 1961 ¹²C = 12 | Value, ¹²C scalepre-1961 values multiplied by 15.9994/16 | z vs previous(new − previous) ÷ previous uncertainty | ReportDOI of the CIAAW report |
|---|---|---|---|---|---|---|
| 1902 | 107.93 | no uncertainty | O=16 | 107.92595262 | 10.1007/BF01370337 | |
| 1909 | 107.88 | no uncertainty | O=16 | 107.8759545 | 10.1021/ja01931a001 | |
| 1925 | 107.880 | no uncertainty | O=16 | 107.8759545 | 10.1039/CT9252700913 | |
| 1961 | 107.870(3) | value(uncertainty) | 12C=12 | 107.87 | 10.1021/ja00881a001 | |
| 1965 | 107.868(1) | value(uncertainty) | 12C=12 | 107.868 | −0.667 | 10.1351/pac196918040569 |
| 1981 | 107.8682(3) | value(uncertainty) | 12C=12 | 107.8682 | 0.200 | 10.1351/pac198355071101 |
| 1985 | 107.8682(2) | value(uncertainty) | 12C=12 | 107.8682 | 0.000 | 10.1351/pac198658121677 |
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