Rubidium (Rb)

Atomic number: 37
Symbol: Rb
Atomic weight: 85.47
Boiling Point (C): 688
Melting Point (C): 38.9
Density: 1.53
heatVapor: 18.1
heatFusion: .55
Electrical Conductivity: 0.08
Thermal Conductivity: --
Specific Heat Capacity: 0.08