* Atomic symbol: O

* Atomic weight: 15.999

* Number of protons: 8

* Number of neutrons: 8

* Number of electrons: 8

* Electron configuration: 1s², 2s², 2p⁴

* Oxidation states: -2, +1, +2, +4, +6

* Electron affinity: -141 kJ/mol

* Ionization energy: 1314 kJ/mol

* Covalent radius: 73 pm

* Atomic radius: 121 pm

* Van der Waals radius: 152 pm

* Magnetic susceptibility: -1.9 × 10⁻⁵ cm³/mol