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Previous | Home | NextAntropoff presented his table in his classic paper, "Eine neue Form des periodischen Systems der Elementen," ("A New Form of the Periodic System of the Elements"), Zeitschrift für angewandte Chemie, 1926, 39, 722-725. In this closeup, lutetium was called "casseopeium." {LINK: Althofen234} "Seltene Erdmetalle" means "Rare earth metals." "Tu" was the former symbol for "Tm" (thulium).
