Abstract
IN NATURE of April 22, 1920 (vol. 105, p. 230) Harkins and Broeker reported that they had obtained a partial separation of the element chlorine into isotopes. Five determinations made early in February of that year showed atomic weight increases of 0.052, 0.059, 0.057, 0.055, and 0.053 unit of atomic weight. Assuming that ordinary chlorine has an atomic weight equal to 35.460, the new chlorine as separated had an atomic weight equal to 35.515.
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HARKINS, W. The Separation of Chlorine into Isotopes. Nature 108, 209 (1921). https://doi.org/10.1038/108209a0
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DOI: https://doi.org/10.1038/108209a0
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