| O | Oxygen | Non-Metal |
| Atomic number: | 8 | Atomic weight: | 15.9994 | ||
| Shells: | 2,6 | Orbitals: | [He] 2s2 2p4 | ||
| Melting point: | -218.4°C | Boiling point: | -182.962°C | ||
| Covalent radius: | 0.73 | Å | Atomic volume: | 14.0 | cm³/mol |
| Atomic radius: | 0.65 | Å | Ionic radius: | 1.40 (-2) | Å |
| Electronegativity: | 3.44 | Oxidation states: | |||
| 1st ionization pot.: | 13.6181 | V | 2nd ionization pot.: | 35.117 | V |
| 3rd ionization pot.: | 54.934 | V | Specific heat: | 0.92 | J/gK |
| Heat of fusion: | 0.22259 | kJ/mol | Heat of vapor.: | 3.4099 | kJ/mol |
| Thermal conduct.: | 0.0002674 | W/cmK | Electrical conduct.: | -- | 10^6/cm ohm |
| Density: | 0.001429 | g/cm³ | Valence: | 2 |