COMMISSION ON ATOMIC WEIGHTS AND ISOTOPIC ABUNDANCES*
Atomic Weights of the Elements 1997
Abstract: The biennial review of atomic weight determinations,
Ar(E), and other cognate data has warranted no changes
for the standard atomic weights of the elements from that previously
published in the Table of Atomic Weights 1995 with the exception of
a new footnote for lithium. The names for the transfermium elements
with atomic numbers 101 to 109 have been officially adopted, and element
112 has been synthesized. Many elements in non-terrestrial matter have
isotopic compositions different from those in similar terrestrial substances
that may affect their atomic weight. Some recent isotopic data on xenon
and oxygen in non-terrestrial materials are included in this report
together with a discussion of the possible processes causing these changes.
*Membership of the Commission for the period 1996-1997 was as follows:
L. Schultz (FRG, Chairman); R. D. Vocke, Jr. (USA, Secretary); J.K.
B�hlke (USA, Associate); H. J. Dietze (FRG, Associate); T. P. Ding (China,
Associate); M. Ebihara (Japan, Titular); J. W. Gramlich (USA, Associate);
A. N. Halliday (USA, Associate); H. J. Kluge (FRG, Associate); H. R.
Krouse (Canada, Titular); R. D. Loss (Australia, Titular); G. I. Ramendik
(Russia, Titular); D. E. Richardson (USA, Associate); M. Sti�venard
(France, Associate); P. D. P. Taylor (Belgium, Titular); P. De Bi�vre
(Belgium, National Representative); J. de Laeter (Australia, National
Representative); N. N. Greenwood (UK, National Representative); H. S.
Peiser (USA, National Representative); M. Shima (Japan, National Representative);
Y. Xiao (China, National Representative).
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