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Use praseodymium in a sentence. a silvery, malleable chemical element, one of the rare-earth elements, whose salts are generally green in color and are used to color glasses and enamels: symbol, Pr; at. no. 59. Origin of praseodymium.
Praseodymium Atomic Weight: 140.907 What is Praseodymium? Praseodymium (atomic number 59, symbol Pr) is a metal discovered in 1885 by the German inventor, scientist, and chemist Carl Auer von Welsbach. It was in 1931 when the element was isolated in a relatively pure form.