Scandium
Transition metal| Atomic number | 21 |
|---|---|
| Category | Transition metal |
| Atomic mass | 44.956 |
| Electron configuration | [Ar]3d¹ 4s² |
| Oxidation states | +3 |
| Electronegativity | 1.36 |
| Melting point | 1,541 °C |
| Boiling point | 2,836 °C |
| Density | 2.99 g/cm³ |
| Crystal structure | Close-packed hexagonal |
| Group | 3 |
| Period | 4 |
| Block | d |
| Discovered | 1,879 |
| Crustal abundance | 22 ppm |
