Roentgenium vs Nihonium
| Property | Rg Roentgenium | Nh Nihonium |
|---|---|---|
| Atomic number | 111 | 113 |
| Symbol | Rg | Nh |
| Name | Roentgenium | Nihonium |
| Category | transition-metal | post-transition-metal |
| Standard Atomic Weight | 281 u | 286 u |
| Period | 7 | 7 |
| Group | 11 | 13 |
| Block | s | p |
| Phase at STP | N/A | solid |
| Electron configuration | [Rn] 7s2 5f14 6d9(predicted) | [Rn] 5f14 6d10 7s2 7p1(predicted) |
| Oxidation states | [-1, 1, 3, 5] | N/A |
| Electronegativity (Pauling) | N/A | N/A |
| Electron affinity | 1.6 eV | 0.6 eV |
| Density | 2.870000e+4 kg/m³ | 1.600000e+4 kg/m³ |
| Melting point | -273.15 °C | 426.85 °C |
| Boiling point | -273.15 °C | 1156.85 °C |
| Discovery year | 1994 | 2004 |