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PERIODIC TABLE
Barium
Atomic No. 56
Ba
Barium
About Barium
Barium is an alkaline earth metal with atomic number 56 that generally forms compounds in the +2 oxidation state. Its compounds include barium titanate for dielectric ceramics and barium sulfate for applications requiring high density or radiopacity. Barium metaphosphate contributes to specialty phosphate glass compositions, including glasses investigated as hosts for rare earth ions in luminescent and optical gain materials.
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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