The Atomic Weight of Radium 1

    Abstract

    ALTHOUGH there has been a considerable amount of discussion, based upon spectroscopic considerations and on its supposed mode of genesis, respecting the place of radium in the system of the elements, and inferentially, therefore, concerning its atomic weight, we are indebted for the only direct experimental determinations of this value hitherto made known to the discoverer of the element, Mme. Curie. Her first observations, published in 1902, were made on about 90 milligrams of the chloride, and furnished the value 225.

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    The Atomic Weight of Radium 1 . Nature 78, 19–20 (1908). https://doi.org/10.1038/078019a0

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