Copper vs Fermium
| Property | Cu Copper | Fm Fermium |
|---|---|---|
| Atomic number | 29 | 100 |
| Symbol | Cu | Fm |
| Name | Copper | Fermium |
| Category | transition-metal | actinide |
| Standard Atomic Weight | 63.546 u | 257 u |
| Period | 4 | 7 |
| Group | 11 | N/A |
| Block | s | s |
| Phase at STP | solid | solid |
| Electron configuration | [Ar]4s13d10 | [Rn] 5f12 7s2 |
| Oxidation states | [-2, 0, 1, 2, 3, 4] | [2, 3] |
| Electronegativity (Pauling) | 1.9 | 1.3 |
| Electron affinity | 1.235 eV | 0.339 eV |
| Density | 8933 kg/m³ | 9700 kg/m³ |
| Melting point | 1084.62 °C | 1526.85 °C |
| Boiling point | 2561.85 °C | -273.15 °C |
| Discovery year | N/A | 1952 |