| name | Lanthanum |
| latin | Lanthanum |
| french | Lanthane |
| german | Lanthan |
| symbol | La |
| proton number | 57 |
| atomic weight | 138.9055 |
| Pauling electronegativity | 1.1 |
| electronic configuration | [Xe] 5d16s2 1s22s22p63s23p63d104s24p64d105s25p65d16s2 |
| melting point | 1193 K, 920°C, 1688°F |
| boiling point | 3743 K, 3470°C, 6278°F |
| group | 3 |
| period | 6 |
| state (by 20°C) | solid |
| oxidation states | +3 |
| Year of discovery | Discoverer |
| 1839 | Carl G. Mosander |