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Priyanshu kumar
option B is correct Explanation:- Oxygen most often has an oxidation state of -2. So if there are four atoms of oxygen, there will be a -8 charge. So Fe atoms have to have a total charge of +8. Fe has a few oxidation states, +2, +3, are the most common. Since there are 3 Fe atoms, we cannot have the same oxidation state of all of the Fe atoms. In this molecule, two of the Fe atoms will have an oxidation state of +3 and one will have an oxidation state of +2 for a total of +8.