Ba - Barium


Atomic Number: 56
Atomic Weight: 137.327
Element Type: Alkali Earth Metal
Crystal Structure: Cubic Body Centered
Melting Point: 727.0°C = 1340.6°F = 1000.15 K
Boiling Point: 1897.0°C = 3446.6°F = 2170.15 K
Critical Temp: °C = °F = K
Atomic Radius: 2.78 Å (Å = Angstrom = 10-10 m)
Covalent Radius: 1.98 Å
Electronegativity: 0.89


(Gr. barys, heavy) Baryta was distinguished from lime by Scheele in 1774; the elementwas discovered by Sir Humphrey Davy in 1808.


It is found only in combination with other elements, chiefly with sulfate and carbonateand is prepared by electrolysis of the chloride.