Cesium
Elemental State Cs
Electron Configuration 1s22s22p63s23p63d104s24p64d105s25p66s1
First Ionization Potential 3.894 eV
Electron Affinity 0.472 eV
Z*  
Pauling Electronegativity 0.79
Covalent Radius 2.25 Å
Metallic Radius 2.72 Å
Ionic Radius 1.81 Å Cs+ coordination number = 6

1.88 Å Cs+ coordination number = 8

van der Waal's Radius  
Melting Point 28.44 oC
Boiling Point 671 oC
Density 1.873 g/cm3
Other Properties