Lanthanum
| Element Name | Lanthanum |
|---|---|
| Symbol | La |
| Atomic Number | 57 |
| Group | Transition Metal |
| Crystal Structure | Hexagonal |
| Atomic Mass | 138.9055 |
| Electronic Configuration | 2,8,18,18,9,2 |
| Orbital Configuration | [Xe] 5d1 6s2 |
| Valency | 3 |
| Melting Point | 918°C |
| Boiling Point | 3464°C |
| Electo-negativity | 1.1 |
| Covalent Radius | 1.69 Å |
