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Q.
What is the oxidation state of iron in brown ring complex compound $\left[ Fe \left( H _2 O \right)_5 NO \right] SO _4$ ?
NTA AbhyasNTA Abhyas 2022
Solution:
In this complex iron is a central metal atom showing + 1 oxidation state.
$\underset{\text{Brown} \, \, \text{ring} \, \, \text{Complex}}{\left[\text{Fe} \left(\left(\text{H}\right)_{2} \text{O}\right)_{5} \text{NO}\right] \left(\text{SO}\right)_{4}}$