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: 28^oC

Boiling Point: 678^oC

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