What is the oxidation number of oxygen in superoxides?

Answer:

The oxidation number of oxygen in superoxides is -1/2 i.e. O-1/2.

Oxidation number

Oxidation number of an atom is defined as the charge that an atom appears to have on forming ionic bonds with other heteroatoms. An atom having higher electronegativity is given a negative oxidation state. The more electronegative atom acquire a negative charge while the less electronegative atom acquire a positive charge. Depending on this hypothesis oxygen have 5 oxidation states.

  • Due to its high electronegativity, oxygen usually has a negative two charge.
  •  In all peroxides, oxygen has an oxidation state of −1.
  •  In all superoxides, oxygen has an oxidation state of − 1/2.

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