Periodic Table of the Elements: Protactinium

Name: Protactinium
Symbol: Pa
Atomic Number: 91
Atomic Mass: (231)
Atomic Volume: ??? cc/mol
Discovered By: Fajans and Göhring
Discovery Date: 1913
Origin of Name: Protactinium - (Greek) protos (first)
Toxicity: ???
Summary: Not found free in nature. Protactinium is a alpha-emitter.


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HHe
LiBeBCNOFNe
NaMgAlSiPSClAr
KCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLr

© Copyright 1998 David August