Term: praseodymium (Pr)
Literally meaning: “pertaining to green twin ”
Origin:
πράσσιος/prassios(=green)
+δίδυμος/didimos(=twin)
The element called praseodymium because it was
isolated from material named “didymium” and forms greenish-brown salts.
Coined/History
In 1882 Bohuslav Brauner
announced that “didymium” incorrectly was said by Carl Mosander to be a new
element (1841). In 1885 Baron Carl Auer Welsbach (1858-1929) recognized that “didymium” was
consisted of two new elements: praseodimium and neodymium. Welsbach reacted
“didymium” to form greenish-brown praseodymium and pink neodymium salts.
Definition
The element Praseodymium is a chemical
element with atomic number 59 and atomic mass
140.90765. It is used mainly for coloring
glass and ceramics.
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