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HOME > Protocols > Reference Material > Periodic Table > Cesium
Cesium

Atomic Number: 55

Name: Cesium

Atomic symbol: Cs

Atomic Weight: 132.9054

Electron affinity: -45 kJ/mol

Electron configuration: 1s22s22p63s23p63d104s24p64d105s25p66s1

Ionization energies: 376 kJ/mol; 2,420 kJ/mol

Pauling electronegativity: 0.7

Melting Point: 28oC

Boiling Point: 678oC

Density: 1.88 g/cm3

Standard potential (volts), M+ + e- ---> M: -2.92

Covalent radius: 2.35 angstroms

Ionic radius: 1.81 angstroms (+1)

Common oxidation states in compounds: +1

Previous: Atomic Number 54 - Xenon


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