(Answered) Potassium superoxide is a deep blue-purple solid that forms

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Potassium superoxide is a deep blue-purple solid that forms on the surface of freshly cut potassium metal. The superoxide ion has a formula of O₂^-. Using this information, which of the following is the best chemical formula for potassium superoxide?

A.KO

B.KO₂

C.K₂O₂

D.K₂O

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