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Oak Ridge National Laboratory credited with discovery of 3 elements in the periodic tableThe periodic table included promethium and three newly discovered elements heavier than uranium - americium, curium and plutonium. Promethium, which has the symbol Pm, was the last rare-earth ...
Elements after uranium on the periodic table have been synthesized for the ... and these researchers will be able to propose a name and atomic symbol for their discovery. Elements 115, 117 ...
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