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PERIODIC TABLE
Calcium
Atomic No. 20
Ca
Calcium
About Calcium
Calcium is an alkaline earth metal with atomic number 20 that generally forms compounds in the +2 oxidation state. Calcium compounds are important in cement, glass and ceramics, while calcium fluoride serves in specialized optical components. Calcium sulfide is also a host material for phosphors, with europium activated compositions producing red emission that has been investigated for lighting and other luminescent applications.
Properties
- Atomic Number
- 20
- Atomic Symbol
- Ca
- Atomic Mass
- 40.078
- CAS No.
- 7440-70-2
- Density
- 1.55 g/cm³
- Series
- alkaline earth metal
- Melting Point
- 842°C
- Boiling Point
- 1,484°C
- Thermal Conductivity
- 2 W/cm °C
- Heat of Fusion
- 8.54 kJ/mol
- Heat of Vaporization
- 155 kJ/mol
- Electronegativity
- 1 pauling
- Crystal Structure
- Cubic
- Electrical Conductivity
- 2.9×107 S/m
Calcium Products
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