| name | Thulium |
| latin | Thulium |
| french | Thulium |
| german | Thulium |
| symbol | Tm |
| proton number | 69 |
| atomic weight | 168.93421 |
| Pauling electronegativity | 1.25 |
| electronic configuration | [Xe] 4f135d06s2 1s22s22p63s23p63d104s24p64d105s25p64f135d06s2 |
| melting point | 1818 K, 1545°C, 2813°F |
| boiling point | 2223 K, 1950°C, 3542°F |
| group | - |
| period | 6 |
| state (by 20°C) | solid |
| oxidation states | +3 |
| Year of discovery | Discoverer |
| 1879 | Per T. Cleve |