Hydrogen vs Thulium
| Property | H Hydrogen | Tm Thulium |
|---|---|---|
| Atomic number | 1 | 69 |
| Symbol | H | Tm |
| Name | Hydrogen | Thulium |
| Category | nonmetal | lanthanide |
| Standard Atomic Weight | 1.007975 u | 168.93422 u |
| Period | 1 | 6 |
| Group | 1 | N/A |
| Block | s | s |
| Phase at STP | gas | solid |
| Electron configuration | 1s1 | [Xe]6s24f13 |
| Oxidation states | [-1, 1] | [0, 1, 2, 3] |
| Electronegativity (Pauling) | 2.2 | 1.25 |
| Electron affinity | 0.75419 eV | 1.029 eV |
| Density | 0.08988 kg/m³ | 9320 kg/m³ |
| Melting point | -259.34 °C | 1544.85 °C |
| Boiling point | -252.87 °C | 1949.85 °C |
| Discovery year | 1766 | 1879 |