Periodic Table of the Elements: Praseodymium


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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HHe
LiBeBCNOFNe
NaMgAlSiPSClAr
KCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLr

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