What is the valency ofFe and O in Fe2O3?
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Valency of Fe and O in Fe2O3 is +3 and -2 respectively
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by cross criss method:
valency of fe in FE2O3 = 3
valency of O in FE2O3 = 2
valency of fe in FE2O3 = 3
valency of O in FE2O3 = 2
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