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Name Barium
Atomic Number 56
Atomic Weight 137
Symbol Ba
Melting Point ( °C ) 720' C or 1341' F
Boiling Point ( °C ) 1897' C or 3447' F
Density (g/cm3) 3.62 grams per cubic centimeter
Earth crust (%)
Discovery (Year) 1808
Group 2A
Electron configuration Xe 6s2
Ionization energy (eV) 502.7 kJ.mol -1

Barium "Ba" was discovered in England in 1808 by Sir Humphry Davy. It has an Atomic # of 56 and its electron confirguration is Xe 6s2. Its melting point is at 1000k (727' C or 1341' F) and its boiling point is at 2170k (1897’ C or 3447’ F ). Is Solid at room temperature. Its major industrial use is in drilling fluid and its major medical use is in a medical cocktail. Barium is never found free in nature because it reacts with oxygen in the air.


Sir Humphry Davy in 1808


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