Sn · tin

주석

Takeaway

Recommended or revised 7 times between 1902 and 2024 (first record 1902, latest revision 1983).
The one revision whose previous recommendation had an uncertainty kept the new value inside the previous (expanded) range.
The current standard atomic weight is 118.710(7) (recommended in 1983).

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 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	118.5	no uncertainty	O=16	118.49555625		10.1007/BF01370337
1903	119.0	no uncertainty	O=16	118.9955375		10.1021/ja02003a001
1916	118.7	no uncertainty	O=16	118.69554875		10.1021/ja02176a001
1925	118.70	no uncertainty	O=16	118.69554875		10.1039/CT9252700913
1961	118.69	no uncertainty	12C=12	118.69		10.1021/ja00881a001
1969	118.69(3)	value(uncertainty)	12C=12	118.69		10.1351/pac197021010091
1983	118.710(7)	value(uncertainty)	12C=12	118.71	0.667	10.1351/pac198456060653

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