Name :  Barium
Symbol :  Ba
Atomic Number :  56
Atomic Weight :  137.327
Specific Heat :  0.204 J/gK
Melting Point :  725°C
Vaporization :  142.0 kJ/mol
Boiling Point :  1897°C
Electronegativity :  0.89
Density@293 K :  3.51 g/cm³
Discovered :  Sir Humphrey Davy, England, 1808
Description :  Soft, slightly malleable, silvery-white metal.
Uses :  Barite, or barium sulfate (BaSO4), when ground is used as a filter for rubber, plastics, and resins. It is insoluable in water and so is used in X-rays of the digestive system. Barium nitrate, Ba(NO3)2, burns brilliant green and is used in fireworks.