| Element | Oxygen | Symbol | O |
| Atomic Number | 8 | Molar Mass | 16 gmol-1 |
| Electron Configuration | [He]2s22p4 | Normal State | gas nonmetal |
| Density @STP | 1.43x10-3 g cm-3 | Melting Point | -218oC |
| Boiling Point | -183oC | Stable Isotopes | 16O, 17O, 18O |
| Atomic Radius | 66 pm | Ionic Radius | 140 (2-) pm |
| Electronegativity (Pauling) | 3.44 | Ionization Energy (1st) | 1314 kJ mol-1 |
| Ionization Energy (2nd) | 3388 kJ mol-1 | Ionization Energy (3rd) | 5300 kJ mol-1 |
| Molar Heat Capacity | 21.9 J K-1mol-1 | Standard Molar Entropy | 161.1 J K-1mol-1 |
| Enthalpy of Fusion | 0.444 kJ mol-1 | Enthalpy of Vapourization | 6.82 kJ mol-1 |