Barium is an alkaline earth metallic elements in Group IIa of periodic table. It is a soft silvery white metal.It occurs naturally in the environment combined with elements like sulphur, carbon and oxygen. It is used for many different purposes such as alloys for spark plug electrodes, in vacuum tubes as drying and oxygen-removing agent, coating of fluorescent lamps and drilling mud. Barium compounds are also used in making paints, bricks, tiles, glass, rubber and fireworks.
Some of its other important properties are:
Atomic number: 56
Atomic weight: 137.33
Density: 3.5 g/cm^3 at 20 degree C.
Melting point: 725 degrees C.
Boiling Point: degrees 1640 C.
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