The brown ring complex compound is formu...

The brown ring complex compound is formulated as `[Fe(H_2 O)_5 NO]SO_4` The oxidation state of Fe is

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`[overset(+1)(Fe) (H_2 overset(0)O)_5 overset(+1)(NO)]^(2+) SO_(4)^(2-) , `Oxidation state of Fe=+1

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