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


History of the recommended atomic-weight values*

  Barium

Z
E
Year
Ar(E)
U[Ar(E)]
D[Ar(E)]
D[Ar(E)]

U[Ar(E)]
56 Ba 1882 137.01 0.1 -0.32 -3.2
1894 137.43 0.03 0.1 3.4
1900 137.4 0.03 0.073 2.4
1909 137.37 0.03 0.043 1.4
1929 137.36 0.03 0.033 1.1
1961 137.34 0.03 0.013 0.43
1969 137.34 0.03 0.013 0.43
1975 137.33 0.01 0.003 0.3
1985 137.327 0.007

> 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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