Periodic Table of the Elements: Gallium

Name: Gallium
Symbol: Ga
Atomic Number: 31
Atomic Mass: 69.72
Atomic Volume: 11.80 cc/mol
Discovered By: Lecoq de Boisbaudran
Discovery Date: 1875
Origin of Name: Gallium - (Latin) Gallia (France)
Toxicity: Hardly toxic. Compounds (especially soluble compounds) are toxic; they surpass mercury and arsenic in toxicity.
Summary: Predicted by Mendeleev using his Periodic Table and named "ekaaluminum". Gallium is liquid just above room temperature (melting point 29.78 °C). Gallium expands by more than 3% on freezing. Gallium Arsenide is an important semiconductor material.


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HHe
LiBeBCNOFNe
NaMgAlSiPSClAr
KCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLr

© Copyright 1998 David August