Tellurium vs Thulium
| Property | Te Tellurium | Tm Thulium |
|---|---|---|
| Atomic number | 52 | 69 |
| Symbol | Te | Tm |
| Name | Tellurium | Thulium |
| Category | metalloid | lanthanide |
| Standard Atomic Weight | 127.6 u | 168.93422 u |
| Period | 5 | 6 |
| Group | 16 | N/A |
| Block | p | s |
| Phase at STP | solid | solid |
| Electron configuration | [Kr]5s24d105p4 | [Xe]6s24f13 |
| Oxidation states | [-2, -1, 0, 1, 2, 3, 4, 5, 6] | [0, 1, 2, 3] |
| Electronegativity (Pauling) | 2.1 | 1.25 |
| Electron affinity | 1.9708 eV | 1.029 eV |
| Density | 6232 kg/m³ | 9320 kg/m³ |
| Melting point | 449.51 °C | 1544.85 °C |
| Boiling point | 987.85 °C | 1949.85 °C |
| Discovery year | 1782 | 1879 |