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PERIODIC TABLE
Tantalum
Atomic No. 73
Ta
Tantalum
About Tantalum
Tantalum is a transition metal with atomic number 73 that predominantly forms compounds in the +5 oxidation state. Its surface oxide provides corrosion resistance and acts as the insulating dielectric in tantalum capacitors. The metal is also used in equipment for corrosive chemicals and selected alloys for demanding thermal applications.
Properties
- Atomic Number
- 73
- Atomic Symbol
- Ta
- Atomic Mass
- 180.9479
- CAS No.
- 7440-25-7
- Density
- 16.65 g/cm³
- Series
- transition metal
- Melting Point
- 3,017°C
- Boiling Point
- 5,458°C
- Thermal Conductivity
- 0.57 W/cm °C
- Heat of Fusion
- 36 kJ/mol
- Heat of Vaporization
- 736 kJ/mol
- Electronegativity
- 1.5 pauling
- Crystal Structure
- Cubic
- Electrical Conductivity
- 7.7×106 S/m
Tantalum Products
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