Lr
Lawrencium
Element 103 · Actinide · Period 7, Group 3
Solid · Discovered 1961
Atomic Properties
| Atomic Number | 103 |
| Atomic Mass | 266.12u |
| Electron Configuration | [Rn]7s2 5f14 6d1 |
| Electronegativity | 1.3Pauling |
| Oxidation States | +3 |
Physical Properties
| Standard State | Solid |
| Melting Point | 1900K |
| Group Block | Actinide |
| Year Discovered | 1961 |