Thallium (Tl)

Atomic number: 81
Symbol: Tl
Atomic weight: 204.37
Boiling Point (C): 1457
Melting Point (C): 303
Density: 11.85
heatVapor: 38.8
heatFusion: 1.02
Electrical Conductivity: 0.055
Thermal Conductivity: 0.093
Specific Heat Capacity: 0.031