Oxygen vs Fluorine
Pick up to 3 elements and see how they stack up.
| Property | Oxygen | Fluorine |
|---|---|---|
| Atomic number | 8 | 9 |
| Atomic mass | 15.999 | 18.998 |
| Electronegativity | 3.44 | 3.98 |
| Melting point | 54.36 K (-218.8 °C) | 53.48 K (-219.7 °C) |
| Boiling point | 90.19 K (-183 °C) | 85.03 K (-188.1 °C) |
| Density | 1.429 g/L | 1.696 g/L |
| Atomic radius | 152 pm | 135 pm |
| Ionization energy | 13.618 eV | 17.423 eV |
| Discovered | 1774 | 1886 |
| Category | Reactive nonmetal | Halogen |
| State at room temp. | Gas | Gas |
| Block | p | p |
| Group | 16 | 17 |
| Period | 2 | 2 |
| Valence electrons | 6 | 7 |
| Common charges | −2 | −1 |
| Electron configuration | [He] 2s2 2p4 | [He] 2s2 2p5 |