Nickel vs Uranium
| Property | Ni Nickel | U Uranium |
|---|---|---|
| Atomic number | 28 | 92 |
| Symbol | Ni | U |
| Name | Nickel | Uranium |
| Category | transition-metal | actinide |
| Standard Atomic Weight | 58.6934 u | 238.02891 u |
| Period | 4 | 7 |
| Group | 10 | N/A |
| Block | s | s |
| Phase at STP | solid | solid |
| Electron configuration | [Ar]4s23d8 | [Rn]7s25f36d1 |
| Oxidation states | [-2, -1, 0, 1, 2, 3, 4] | [-1, 1, 2, 3, 4, 5, 6] |
| Electronegativity (Pauling) | 1.91 | 1.38 |
| Electron affinity | 1.156 eV | 0.3 eV |
| Density | 8912 kg/m³ | 1.895000e+4 kg/m³ |
| Melting point | 1454.85 °C | 1134.85 °C |
| Boiling point | 2912.85 °C | 4130.85 °C |
| Discovery year | 1751 | 1789 |