Radium And Radioactivity
Radium And Radioactivity
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Attempts to measure the atomic weight of actinium emanation by diffusion measurements indicate that it is high, though the actual figures are usually dis- tinctly less than those for the other emanations. It is very doubtful, since this element decays so rapidly, whether any even approximately correct result can be obtained.
Actinium emanation itself and two of its products emit a-particles, and if it be assumed that its atomic weight is in the neighbourhood of 222, then the 134 RADIUM AND RADI...OACTIVITY atomic weight of the final product should be in the neighbourhood of 210. Since radioactinium and actinium X emit a-particles, on similar reasoning the atomic weight of actinium should be in the neigh- bourhood of 228, somewhat greater than radium. It invariably occurs with uranium, and it is usually regarded as being formed from that element, not in the line of descent of the radium series, but in a side line. Judging from the relative amounts of actinium and radium present in uranium minerals, if this theory is correct, Soddy has calculated that for every seven atoms of uranium which disintegrate, giving rise to radium products, one gives rise to actinium products.
What to read after Radium And Radioactivity?
You can find similar books in the "Read Also" column, or choose other free books by A T Alexander Thomas Cameron to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Attempts to measure the atomic weight of actinium emanation by diffusion measurements indicate that it is high, though the actual figures are usually dis- tinctly less than those for the other emanations. It is very doubtful, since this element decays so rapidly, whether any even approximately correct result can be obtained.
Actinium emanation itself and two of its products emit a-particles, and if it be assumed that its atomic weight is in the neighbourhood of 222, then the 134 RADIUM AND RADI...OACTIVITY atomic weight of the final product should be in the neighbourhood of 210. Since radioactinium and actinium X emit a-particles, on similar reasoning the atomic weight of actinium should be in the neigh- bourhood of 228, somewhat greater than radium. It invariably occurs with uranium, and it is usually regarded as being formed from that element, not in the line of descent of the radium series, but in a side line. Judging from the relative amounts of actinium and radium present in uranium minerals, if this theory is correct, Soddy has calculated that for every seven atoms of uranium which disintegrate, giving rise to radium products, one gives rise to actinium products.
What to read after Radium And Radioactivity?
You can find similar books in the "Read Also" column, or choose other free books by A T Alexander Thomas Cameron to read onlineMoreLess
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