Periodic Table of the Elements: Cesium


Name: Cesium
Symbol: Cs
Atomic Number: 55
Atomic Mass: 132.905
Atomic Volume: 67.84 cc/mol
Discovered By: Bunsen and Kirchhoff
Discovery Date: 1860
Origin of Name: Cesium - (Latin) caesius (sky blue) (from its bright blue spectral lines)
Toxicity: No information available.
Summary: Not found free in Nature. Cesium is the most electropositive natural element. Reacts explosively with water. Cesium melts at just above room temperature. Cesium hydroxide is one of the strongest bases known.

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HHe
LiBeBCNOFNe
NaMgAlSiPSClAr
KCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLr

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