PERIODIC TABLE
Platinum
Atomic No. 78
Pt
Platinum
About Platinum
Platinum is a platinum group metal with atomic number 78 that commonly forms compounds in the +2 and +4 oxidation states. It catalyzes reactions in chemical manufacturing, automotive exhaust treatment and fuel cells. Platinum and its alloys are also used in thermocouples and specialized electrical components, where corrosion resistance and stable performance are valuable.
Properties
- Atomic Number
- 78
- Atomic Symbol
- Pt
- Atomic Mass
- 195.078
- CAS No.
- 7440-06-4
- Density
- 21.45 g/cm³
- Series
- transition metal
- Melting Point
- 1,768.3°C
- Boiling Point
- 3,825°C
- Thermal Conductivity
- 71 W/cm °C
- Heat of Fusion
- 20 kJ/mol
- Heat of Vaporization
- 490 kJ/mol
- Electronegativity
- 2.28 pauling
- Crystal Structure
- Cubic
- Electrical Conductivity
- 9.4×106 S/m
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