Scandium vs Thulium
| Property | Sc Scandium | Tm Thulium |
|---|---|---|
| Atomic number | 21 | 69 |
| Symbol | Sc | Tm |
| Name | Scandium | Thulium |
| Category | transition-metal | lanthanide |
| Standard Atomic Weight | 44.955908 u | 168.93422 u |
| Period | 4 | 6 |
| Group | 3 | N/A |
| Block | s | s |
| Phase at STP | solid | solid |
| Electron configuration | [Ar]4s23d1 | [Xe]6s24f13 |
| Oxidation states | [0, 1, 2, 3] | [0, 1, 2, 3] |
| Electronegativity (Pauling) | 1.36 | 1.25 |
| Electron affinity | 0.188 eV | 1.029 eV |
| Density | 2990 kg/m³ | 9320 kg/m³ |
| Melting point | 1540.85 °C | 1544.85 °C |
| Boiling point | 2835.85 °C | 1949.85 °C |
| Discovery year | 1879 | 1879 |