Superoxide ion, peroxide ion, and oxide ion can be thought of as arising from oxygen by the transfer of the appropriate number of electrons to O2:
O2 + e- → O2-
O2 + 2e- → (O2)2-
O2 + 4e- → (2O2)-
What are the chemical formulas for potassium superoxide, potassium peroxide, and potassium oxide?
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