Cesium (Cs)

Atomic number: 55
Symbol: Cs
Atomic weight: 132.905
Boiling Point (C): 690
Melting Point (C): 28.7
Density: 1.9
heatVapor: 16.3
heatFusion: .5
Electrical Conductivity: 0.053
Thermal Conductivity: --
Specific Heat Capacity: 0.052