Scandium (Sc)
Scandium
Scandium (Sc) is a transition metal in period 4, group 3. Its relative atomic mass is 44.956 and the molar mass of the atom is 44.956 g/mol.
Atomic number 21
Atomic mass 44.956
Molar mass 44.956 g/mol
Category Transition metal Solid
Properties of scandium
| Atomic number | 21 |
|---|---|
| Symbol | Sc |
| Latin name | Scandium |
| Relative atomic mass | 44.956 |
| Molar mass | 44.956 g/mol |
| Group, period, block | 3, 4, d |
| Category | Transition metal |
| State at 20 °C | Solid |
| Electron configuration | [Ar] 3d¹ 4s² |
| Electronegativity (Pauling) | 1.36 |
| Atomic radius | 160 pm |
Electron configuration of scandium
Electrons per shell
K2L8M9N2
Full notation
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹ 4s²
Noble-gas notation
21 protons · 21 electrons[Ar] 3d¹ 4s²
Formula and compounds of scandium
Simple substanceScscandiumMolar mass of Sc: 44.956 g/mol
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Frequently asked questions
The relative atomic mass of scandium is 44.956, so the molar mass of the atom is 44.956 g/mol.
Full: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹ 4s². Noble-gas notation: [Ar] 3d¹ 4s².