Sc
Scandium
Element 21 · Transition metal · Period 4, Group 3
Solid · Discovered 1879
Atomic Properties
| Atomic Number | 21 |
| Atomic Mass | 44.95591u |
| Electron Configuration | [Ar]4s2 3d1 |
| Electronegativity | 1.36Pauling |
| Atomic Radius | 211pm |
| Ionization Energy | 6.561eV |
| Electron Affinity | 0.188eV |
| Oxidation States | +3 |
Physical Properties
| Standard State | Solid |
| Melting Point | 1814K |
| Boiling Point | 3109K |
| Density | 2.99g/cm³ |
| Group Block | Transition metal |
| Year Discovered | 1879 |