Name:
Praseodymium
Symbol:
Pr
Atomic Number:
59
Atomic Mass:
140.907
Atomic Volume:
20.82 cc/mol
Discovered By:
First isolated (along with neodymium) by von Welsbach in 1885
Discovery Date:
1885
Origin of Name:
Praseodymium - (Greek) prasios (green) and didymos (twin)
Toxicity:
???
Summary:
A rare earth lanthanide. Used in lighter flints and welders' goggles. Praseodymium is the only element whose name contains A, E, I, O, U, and Y.
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