| Lawrencium | ≡ |
| Symbol | Lr |
|---|---|
| Latin name | Lawrencium |
| Atomic number | 103 |
| Period | 7 |
| Element category | Inner transition elements |
| Relative atomic mass | 260.1053 |
| Group | III.B |
| Oxidation numbers | 3 |
| State | Solid |
| Thermal conductivity [W m-1K-1] | 10 |
| Discovery | 1961 |
| Stable isotopes | 0 |
| Unstable isotopes | 2 |