Word: transuranium
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...DISCOVER elements," Glenn Theodore Seaborg once told an interviewer. And he certainly does: in less than 20 years. Chemist Seaborg shared in the discovery of nine new elements, all of them in the heavy, transuranium field. In 1940, when he was just 28, Seaborg and Physicist Edwin McMillan identified plutonium, and with it, the key to the atomic bomb; in 1951 Seaborg and McMillan received the Nobel Prize for their discovery. Working in a University of California laboratory, Seaborg and his associates gradually extended the periodic table of elements, usually named their discoveries for their place of origin (americum, berkelium...
...Verification of the transuranium chemical elements...
...Jean Perrin. 71, refugee French physicist, 1926 winner of the Nobel Prize; in Manhattan. A onetime associate of the Curies, famed for his studies of molecular physics, he announced in 1938 that he had discovered evidence of the existence of an element heavier than element 92 (uranium), called it transuranium...