Oxidation state of oxygen in OF2

Q: Oxygen has -2 oxidation state in all its compounds but it is +2 in OF2. Why?

Ans:    Because Fluorine is the most electronegative among all the elements. Fluorine assigns an oxidation number of -1. Hence in OF2, F is 2(-1). The OF2 is a neutral molecule. So the oxidation number of ‘O’ in OF2 is +2.

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