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


History of the recommended atomic-weight values*

Uranium

Z
E
Year
Ar(E)
U[Ar(E)]
D[Ar(E)]
D[Ar(E)]
U[Ar(E)]
92 U 1882 239.03 0.1 1 10
1894 239.6 0.3 1.6 5.2
1896 239.59 0.03 1.6 52
1900 239.6 0.3 1.6 5.2
1903 238.5 0.3 0.47 1.6
1916 238.2 0.3 0.17 0.57
1925 238.17 0.03 0.14 4.7
1931 238.14 0.03 0.11 3.7
1937 238.07 0.03 0.041 1.4
1961 238.03 0.03 0.0011 0.037
1969 238.029 0.001 0.0001 0.1
1979 238.0289 0.0001

> 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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