PERIODIC TABLE

Barium

Atomic No. 56 Ba Barium

About Barium

Barium is an alkaline earth metal with atomic number 56 and is found naturally in minerals such as barite and witherite. Because of its high reactivity, elemental barium is not encountered freely in nature, but its compounds are widely used in ceramics, glass, electronics, pigments, drilling fluids, and specialty chemical applications. Barium compounds are also important in dielectric materials, ferrites, and other advanced ceramic systems where controlled composition and purity are critical.

Properties

Atomic Number
56
Atomic Symbol
Ba
Atomic Mass
137.327
CAS No.
7440-39-3
Density
3.51 g/cm³
Series
alkaline earth metal
Melting Point
727°C
Boiling Point
1,870°C
Thermal Conductivity
0.18 W/cm °C
Heat of Fusion
8 kJ/mol
Heat of Vaporization
140 kJ/mol
Electronegativity
0.89 pauling
Crystal Structure
Cubic
Electrical Conductivity
2.9×106 S/m

Barium Products

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