What is true about complex and the oxidation state of iron formed during brown ring test?

Chemistry · JEE Main · NTA Exams — Coordination Compounds

\(\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{3} \mathrm{NO}\right] \mathrm{SO}_{4} \quad \text { O.S. }=+2\)
\([\mathrm{FeNO}] \mathrm{SO}_{4} \quad \text { D.5. }=+2\)
\(\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{3} \mathrm{NO}\right] \mathrm{SO}_{4} \quad \text { O.S. }=+1\)
\([\mathrm{FeNO}] \mathrm{SO}_{4} \quad \text { D.5. }=+3\)

Answer

(C) [ Fe ( H _ 2 O )_ 3 NO ] SO _ 4 O.S. =+1

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