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Pure Appl. Chem., Vol. 70, No. 1, pp. 237-257, 1998.
History of the recommended atomic-weight values* Lead Z E Year Ar(E) U[Ar(E)] D[Ar(E)] D[Ar(E)] U[Ar(E)] 82 Pb 1882 206.95 0.1 -0.25 -2.5 1896 206.92 0.03 -0.28 -9.3 1903 206.9 0.3 -0.3 -1 1909 207.1 0.03 -0.1 -3.3 1916 207.2 0.03 0 0 1931 207.22 0.03 0.02 0.67 1937 207.21 0.03 0.01 0.33 1961 207.19 0.03 -0.01 -0.33 1969 207.2 0.1 > 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 Copyright © 1997-2000 International Union of Pure and Applied Chemistry. Questions or comments about IUPAC, please contact the Secretariat. Questions regarding the website, please contact [email protected].
History of the recommended atomic-weight values*
Lead
Z E Year Ar(E) U[Ar(E)] D[Ar(E)] D[Ar(E)] U[Ar(E)] 82 Pb 1882 206.95 0.1 -0.25 -2.5 1896 206.92 0.03 -0.28 -9.3 1903 206.9 0.3 -0.3 -1 1909 207.1 0.03 -0.1 -3.3 1916 207.2 0.03 0 0 1931 207.22 0.03 0.02 0.67 1937 207.21 0.03 0.01 0.33 1961 207.19 0.03 -0.01 -0.33 1969 207.2 0.1 > 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.
> 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 Copyright © 1997-2000 International Union of Pure and Applied Chemistry.
Questions or comments about IUPAC, please contact the Secretariat. Questions regarding the website, please contact [email protected].