Bragg, William Henry, Sir, 1862-1942, Bragg, William Lawrence, Sir, 1890-1971 · London : G. Bell · leaf 101
in atomic weight. Soddy haspointed out that radium B, actinium B, thorium B,and radium D are all isotopes of lead, showingchemical properties identical with those of lead, andinseparable from lead by chemical means. This isin spite of the fact that their atomic weights differfrom each other ; that… … 8° 25 It is to be observed, however, that in all thesecomparisons we have picked out the importantlines from the various spectra, and we are still inignorance as to how to place the rest. We do notunderstand in the least the mechanism through whichit is brought about that so many of the elements…
Crystallography · X-rays
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