21
Sc
scandium
44.956

General properties

Group
group 3
Period
period 4
Category
transition metals
Standard atomic weight
44.955 908(5)
Melting point
1814 K (1541 °C)
Boiling point
3109 K (2836 °C)
Phase at STP
solid

Additional properties

Block
d-block
Electron configuration
[Ar] 3d¹ 4s²
Electrons per shell
2, 8, 9, 2
Electronegativity
1.36
Density
2.985 g/cm³
Oxidation states
0, +1, +2, +3 (an amphoteric oxide)
CAS Number
7440-20-2