Scandium is a kind of chemical element. The element symbol is Sc and the atomic number is 21. The elemental is a soft, silvery-white transition metal, often mixed with gadolinium and erbium, that is produced in small quantities and is about 0.0005% in the Earth's crust. Scandium is commonly used to make special glass, light and high temperature resistant alloys.

Physical property

Melting point: 1814 K (1541 °C)

Boiling point: 3103 K (2830 °C)

Density:

Description: A soft, silvery-white metal

Molar volume:

Heat of vaporization: 314.2 kJ/mol

Heat of melting: 14.1 kJ/mol

Steam pressure: 22.1 Pa (1812K)

Sound speed: No data (293.15K)

Electronegativity: 1.36 (Pauling scale)

Specific heat capacity: 568 J/(kg·K)

Electrical conductivity: Ω

Thermal conductivity: 15.8W /(m·K)

Chemical property

Element name: Scandium

Scandium

Element symbol: Sc

Atomic number: 21

Class of elements: Transition metals

CAS number: 7440-20-2

Crust content: %

Relative atomic mass: 44.955912(6)

Atomic radius: 160 (184) pm

Covalent radius: 144pm

Valence electron configuration:

Electrons in each energy level: 2,8,9,2

Common valence: +3 (weakly basic)

Crystal structure: hexagonal close-packed lattice