Abstract
IN the Philosophical Magazine for April, 1903, Runge and Precht work out the atomic weight of radium from its spectrum to be 258, instead of the 225 found by Madame Curie. I should like to point out that the spectrum data of radium support the value given by Madame Curie, if handled according to Section v. of “The Cause of the Structure of Spectra” (Phil. Mag., September, 1901). There is an important question of principle involved in the distinction between the two methods of using the spectrum of an element for determining its place in the periodic classification.
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SUTHERLAND, W. The Atomic Weight of Radium. Nature 69, 606–607 (1904). https://doi.org/10.1038/069606c0
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DOI: https://doi.org/10.1038/069606c0
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