Periodic Table of the Elements: Thallium

Name: Thallium
Symbol: Tl
Atomic Number: 81
Atomic Mass: 204.37
Atomic Volume: 17.22 cc/mol
Discovered By: Crookes
Discovery Date: 1861-2
Origin of Name: Thallium - (Greek) thallos, (green shoot or twig, (from its green spectral line))
Toxicity: Apparently toxic. Compounds are toxic; they are strong nerve and protoplasmic poisons; their action is similar to that of arsenic and lead compounds; thallium salts produce trichorrhea.
Summary: Not found free in Nature. Thallium is readily oxidized by air forming a gray coating of oxide.


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HHe
LiBeBCNOFNe
NaMgAlSiPSClAr
KCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLr

© Copyright 1998 David August