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PERIODIC TABLE
Scandium
Atomic No. 21
Sc
Scandium
About Scandium
Scandium is a transition metal with atomic number 21 whose chemistry is dominated by the +3 oxidation state. It is used in selected aluminum alloys, while scandium stabilized zirconia provides oxide ion conducting ceramics for solid oxide electrochemical cells. Scandium fluoride exhibits negative thermal expansion over a broad temperature range, making it a research material for understanding and controlling the dimensional response of solids to temperature.
Properties
- Atomic Number
- 21
- Atomic Symbol
- Sc
- Atomic Mass
- 44.9559
- CAS No.
- 7440-20-2
- Density
- 2.985 g/cm³
- Series
- transition metal
- Melting Point
- 1,541°C
- Boiling Point
- 2,830°C
- Thermal Conductivity
- 0.16 W/cm °C
- Heat of Fusion
- 16 kJ/mol
- Heat of Vaporization
- 318 kJ/mol
- Electronegativity
- 1.36 pauling
- Crystal Structure
- Hexagonal
- Electrical Conductivity
- 1.8×106 S/m
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