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Oxidation states of Iron in ${Fe}_{3} O_{4}$ are

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+3 , +3 , +2

+2 , +2 , +4

+2 , 0 , +6

+1 , +2 , +5

answer is A.

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Detailed Solution

${Fe}_{3} O_{4}$ is a mixed oxide ;

It exists as ${Fe}_{2} O_{3} . FeO$ ;

Two $Fe$ atoms will have “+3” state ;

One $Fe$ atom will have “+2” state .

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