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OpenStudy (anonymous):
what is the valency of FE in this equation : 3 Fe + 4 H 2 O gives Fe3 O4 + 4H 2
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OpenStudy (shubhamsrg):
do you mean change is oxidation no. ?
OpenStudy (anonymous):
3 Fe + 4 H 2 O gives Fe3 O4 + 4H 2 here fe has 0 oxidation state and in product side fe has 8/3=2.6 now valency = (2.6-0)x3 as in reactant side there are three is coefficient ok =8
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