Into what elements was Di subsequently separated?

TabbyTom

Pr and Nd "For more than fifty years the elementary character of didymium was accepted, until Auer von Welsbach, by a most laborious process of fractional precipitation of the double nitrate of didymium and ammonium, succeeded in isolating two distinctly different double nitrates..from which were prepared two different series of salts, of different elements, which were now named praseodymium and neodymium." (1905 Gooch & Walker Outline of Inorganic Chemistry xix. 493 – quoted in Oxford English Dictionary). Feb 26 05, 10:09 AM

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