56Ba
Barium
Alkaline Earth MetalBarium (Ba) is element 56, an alkaline earth metal, in period 6 and group 2 of the periodic table. Its standard atomic weight is 137.327, it melts at 727 °C and boils at 1845 °C. Discovered by Humphry Davy, 1808.
Atomic Number56
SymbolBa
NameBarium
Atomic Weight137.327 u
CategoryAlkaline Earth Metal
Period6
Group2
Melting Point727 °C
Boiling Point1845 °C
Density3.594 g/cm³
Electron Config[Xe] 6s2
Discovered ByHumphry Davy, 1808