Fluorine vs Neon
| Property | F Fluorine | Ne Neon |
|---|---|---|
| Atomic number | 9 | 10 |
| Symbol | F | Ne |
| Name | Fluorine | Neon |
| Category | halogen | noble-gas |
| Standard Atomic Weight | 18.998403 u | 20.1797 u |
| Period | 2 | 2 |
| Group | 17 | 18 |
| Block | p | p |
| Phase at STP | gas | gas |
| Electron configuration | [He]2s22p5 | [He]2s22p6 |
| Oxidation states | -1 | [0] |
| Electronegativity (Pauling) | 3.98 | N/A |
| Electron affinity | 3.4011 eV | -1.2 eV |
| Density | 1.696 kg/m³ | 0.8999 kg/m³ |
| Melting point | -219.62 °C | -248.59 °C |
| Boiling point | -188.12 °C | -246.05 °C |
| Discovery year | 1886 | 1898 |