International Atomic Weights*

Abstract

TWO changes in the table of atomic weights are recommended by the Committee on Atomic Weights of the International Union of Chemistry in its second report, which has just been published; the atomic weight of krypton is considered to be 83.7 instead of 82.9, and of xenon 131.3 instead of 130.2. The Committee, which consists of Prof. G. P. Baxter (Cambridge, Mass.), Mme. P. Curie (Paris), Prof. P. Lebeau (Paris), and Prof. R. J. Meyer (Berlin), reports on all the atomic weight investigations published during the period Feb.—Oct. 1931 which have come to its attention; future reports will cover a period of twelve months. Authors of papers bearing on the subject are requested to send copies to each of the five members of the Committee at the earliest possible moment.