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Pure Appl. Chem., Vol. 70, No. 1, pp. 237-257, 1998.


History of the recommended atomic-weight values*

Carbon
Z
E
Year
Ar(E)
U[Ar(E)]
D[Ar(E)]
D[Ar(E)]
U[Ar(E)]
6 C 1882 12.00 0.1 -0.011 -0.11
1894 12 3 -0.011 -0.004
1896 12.01 0.03 -0.0007 -0.023
1898 12.00 0.03 -0.011 -0.36
1916 12.005 0.003 -0.0057 -1.9
1925 12.000 0.003 -0.0057 -3.6
1931 12.00 0.03 -0.011 -0.36
1937 12.01 0.03 -0.0007 -0.023
1938 12.010 0.003 -0.0007 -0.23
1953 12.007 0.003 -0.0037 -1.23
1961 12.01115 0.00005 0.00045 9
1969 12.011 0.001 0.0003 0.3
1995 12.0107 0.0008

> Return to list or table of elements

Ref. History of the recommended atomic-weight values from 1882 to 1997: a comparison of differences from current values to the estimated uncertainties of earlier values, Pure Appl. Chem., Vol. 70, No. 1, pp. 237-257, 1998.

Page last modified 7 June 2000
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