Need for the Redetermination of the Atomic Weights, of Uranium, Thorium, and Radium

Abstract

IT is known that the atomic weights of such radio-elements as have been determined experimentally agree approximately with those to be expected on radioactive theory, and also that small unexplained discrepancies appear when the actual instead of the approximate values are considered. The simplest explanation of these small discrepancies is, I think, that one at least of these determinations is wrong, and I give reasons below for this view in the hope that someone versed in atomic weight work will make fresh determinations of the masses of the elements concerned.