Question

The brown ring complex $\left[Fe\right(H_{2}O{)}_{5}N{O}^{+}]S{O}_4$ has oxidation number of Fe as :

Answer 1

$NO$ in iron complex has +1 oxidation number.
Let oxidation state of Fe be $x$.
The complex is $\left[Fe\right(H_{2}O{)}_{5}N{O}^{+}]S{O}_4$.
Therefore, $x+1=+2$
or, $x=+1$.