Question

what is the oxidation state of fe?

Answer 1

2 because x-6=4 x=2 Fe has +2 oxidation no.

Answer 2

HEY !!! HERE IS YOUR ANSWER 》》

The oxidation state of iron in this compound is

Let the oxidation number of Fe be X

Here oxidation number on CN = -1
K4[Fe(CN)6]3 → 4 K + + 3 [Fe(CN)6]4-

For [Fe(CN)6]4- 

X × 6 (-1) = -4

∴ X = +2 

Hence the oxidation state/ number of inner Fe is +2

HOPE IT HELPS ^_^