Fluorine vs Meitnerium
| Property | F Fluorine | Mt Meitnerium |
|---|---|---|
| Atomic number | 9 | 109 |
| Symbol | F | Mt |
| Name | Fluorine | Meitnerium |
| Category | halogen | transition-metal |
| Standard Atomic Weight | 18.998403 u | 278 u |
| Period | 2 | 7 |
| Group | 17 | 9 |
| Block | p | s |
| Phase at STP | gas | N/A |
| Electron configuration | [He]2s22p5 | [Rn]7s25f146d7(calculated) |
| Oxidation states | -1 | [1, 3, 4, 6, 8, 9] |
| Electronegativity (Pauling) | 3.98 | N/A |
| Electron affinity | 3.4011 eV | 1.7 eV |
| Density | 1.696 kg/m³ | 3.740000e+4 kg/m³ |
| Melting point | -219.62 °C | -273.15 °C |
| Boiling point | -188.12 °C | -273.15 °C |
| Discovery year | 1886 | 1982 |