About the sample | This is a commercial sample. Thulium is packed in a glass ampoule under argon to protect it from corrosion. It is a part of the private collection of Metodija Najdoski. |
| Z | 69 |
| ρ / g/cm3 | 9.32 |
| tt, mp / °C | 1545 |
| tv, bp / °C | 1950 |
| Ar | 168.93 |
| Electronegativity, (X) | 1.25 |
| Crystal structure | Hexagonal |
| Extended information | https://www.webelements.com/thulium/ |