Beryllium vs Holmium
| Property | Be Beryllium | Ho Holmium |
|---|---|---|
| Atomic number | 4 | 67 |
| Symbol | Be | Ho |
| Name | Beryllium | Holmium |
| Category | alkaline-earth-metal | lanthanide |
| Standard Atomic Weight | 9.012183 u | 164.93033 u |
| Period | 2 | 6 |
| Group | 2 | N/A |
| Block | s | s |
| Phase at STP | solid | solid |
| Electron configuration | [He]2s2 | [Xe]6s24f11 |
| Oxidation states | [0, 1, 2] | [0, 1, 2, 3] |
| Electronegativity (Pauling) | 1.57 | 1.23 |
| Electron affinity | -0.52 eV | 0.338 eV |
| Density | 1850 kg/m³ | 8800 kg/m³ |
| Melting point | 1286.85 °C | 1473.85 °C |
| Boiling point | 2470.85 °C | 2699.85 °C |
| Discovery year | 1797 | 1878 |