What is the oxidation state of Fe and Cr in chromite ore ( FeCr2O4 ) ???????

Ans is +3 and +6 but how ....plz anybody plz explain ???????????

 No, answer is +2 and +3, Since- FeCr2O4 + K2CO3 + KClO3--------Fe2O3 + K2Cr2O4 + KCl + CO2

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U r wrong dude.Answer is +2and +3

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