Scandium

Transition metals · Group 3 · Period 4

Atomic properties

Atomic number	21
Symbol	Sc
Standard atomic weight	44.956
Classification	Transition metals
Group	3
Period	4
Block	d-block
Electron configuration	[Ar] 3d1 4s2
Electronegativity (Pauling)	1.36
Common oxidation states	+3

Physical properties

Phase at 20 °C	Solid
Density	2.985 g/cm³
Melting point	1541 °C
Boiling point	2836 °C
Discovered	1879
CAS number	—

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