Aluminum vs Erbium
| Property | Al Aluminum | Er Erbium |
|---|---|---|
| Atomic number | 13 | 68 |
| Symbol | Al | Er |
| Name | Aluminum | Erbium |
| Category | post-transition-metal | lanthanide |
| Standard Atomic Weight | 26.981538 u | 167.259 u |
| Period | 3 | 6 |
| Group | 13 | N/A |
| Block | p | s |
| Phase at STP | solid | solid |
| Electron configuration | [Ne]3s23p1 | [Xe]6s24f12 |
| Oxidation states | [-2, -1, 0, 1, 2, 3] | [0, 1, 2, 3] |
| Electronegativity (Pauling) | 1.61 | 1.24 |
| Electron affinity | 0.4328 eV | 0.312 eV |
| Density | 2700 kg/m³ | 9070 kg/m³ |
| Melting point | 660.287 °C | 1528.85 °C |
| Boiling point | 2518.85 °C | 2867.85 °C |
| Discovery year | 1825 | 1843 |