Fluorine vs Neon
Pick up to 3 elements and see how they stack up.
| Property | Fluorine | Neon |
|---|---|---|
| Atomic number | 9 | 10 |
| Atomic mass | 18.998 | 20.18 |
| Electronegativity | 3.98 | — |
| Melting point | 53.48 K (-219.7 °C) | 24.56 K (-248.6 °C) |
| Boiling point | 85.03 K (-188.1 °C) | 27.07 K (-246.1 °C) |
| Density | 1.696 g/L | 0.9 g/L |
| Atomic radius | 135 pm | 154 pm |
| Ionization energy | 17.423 eV | 21.565 eV |
| Discovered | 1886 | 1898 |
| Category | Halogen | Noble gas |
| State at room temp. | Gas | Gas |
| Block | p | p |
| Group | 17 | 18 |
| Period | 2 | 2 |
| Valence electrons | 7 | 8 |
| Common charges | −1 | 0 |
| Electron configuration | [He] 2s2 2p5 | [He] 2s2 2p6 |