In which of the following pair oxidation number of Fe is same :-

In which of the following pair oxidation number of Fe is same :-
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In which of the following pair oxidation number of Fe is same :- A. `K_(3)Fe(CN)_(6),Fe_(2)O_(3)` B. `Fe(CO ... . `Fe_(2)(SO_(4))_(3),K_(4)Fe(CN)_(6)`
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