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  4. The oxidation number of Fe in Fe3O4 is

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Q. The oxidation number of $Fe$ in $ Fe_{3}O_{4} $ is

BHUBHU 2007

Solution:

Let the oxidation state of $Fe$ is ' $x$ '
$Fe _{3} O _{4} =0 $
$3 x+4(-2) =0$
$3 x-8 =0$
$x =\frac{8}{3}$