Abstract
IT is reported in the daily Press that Dr. J. Papish, assistant professor of chemical spectroscopy at Cornell University, has identified the element of atomic number 87 in samarskite. It is stated to occur to the extent of one part in two million. This element would appear to be the missing alkali following caesium. The radioactive properties of the element, if any, should be interesting.
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[News and Views]. Nature 128, 696–698 (1931). https://doi.org/10.1038/128696b0
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DOI: https://doi.org/10.1038/128696b0