Symbol
Sc
Atomic Number
21
Atomic Mass
44.956
Protons
21
Neutrons
24
Electrons
21
Type
Transition Metal
Isotopes
Scandium-45
Discovery Year
1879
Discovered By
Lars Fredrik Nilson
Group
3
Period
4
Boiling Point
5130°F
Melting Point
2806°F
Electron Configuration
[Ar] 3d¹ 4s²
Density (g/cm³)
2.985
Crystal Structure
Hexagonal close-packed
Magnetism
Paramagnetic
Abundance in Earth's Crust
0.0026%
Phase at Room Temperature
Solid