Fluorine vs Roentgenium
| Property | F Fluorine | Rg Roentgenium |
|---|---|---|
| Atomic number | 9 | 111 |
| Symbol | F | Rg |
| Name | Fluorine | Roentgenium |
| Category | halogen | transition-metal |
| Standard Atomic Weight | 18.998403 u | 281 u |
| Period | 2 | 7 |
| Group | 17 | 11 |
| Block | p | s |
| Phase at STP | gas | N/A |
| Electron configuration | [He]2s22p5 | [Rn] 7s2 5f14 6d9(predicted) |
| Oxidation states | -1 | [-1, 1, 3, 5] |
| Electronegativity (Pauling) | 3.98 | N/A |
| Electron affinity | 3.4011 eV | 1.6 eV |
| Density | 1.696 kg/m³ | 2.870000e+4 kg/m³ |
| Melting point | -219.62 °C | -273.15 °C |
| Boiling point | -188.12 °C | -273.15 °C |
| Discovery year | 1886 | 1994 |