21 Sc
Transition metal
Scandium
Used in aerospace alloys.
Properties of Scandium
- Atomic number (Z)
- 21
- Symbol
- Sc
- Atomic mass
- 44.956 g/mol
- Category
- Transition metal
- Group
- 3
- Period
- 4
- Electron configuration
- [Ar] 3d¹ 4s²
- Electronegativity (Pauling)
- 1.36
- Atomic radius
- 184 pm
- First ionization energy
- 633 kJ/mol
- Melting point
- 1814 K (1540.8 °C)
- Boiling point
- 3109 K (2835.8 °C)
- Density
- 2.989 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1879
Frequently asked questions
What is Scandium?
Scandium (Sc) is a transition metal, element number 21 on the periodic table. Used in aerospace alloys.
What is the atomic number and atomic mass of Scandium?
Scandium has atomic number 21 and an atomic mass of about 44.956 g/mol.
What is the electron configuration of Scandium?
The electron configuration of Scandium is [Ar] 3d¹ 4s².
Where is Scandium on the periodic table?
Scandium sits in group 3, period 4, and is classified as a transition metal.