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When dilute ferrous (Fe^(2+)) salt solut...

When dilute ferrous `(Fe^(2+))` salt solution is added to an aqeous solution containing nitrate `(NO_(3)^(-))` ion followed by the addition of conc. `H_(2)SO_(4)` forms a brown colored ring. What is te chemical composition of the complex that is responsible for this brown colored ring.

A

`Fe(NO_(3))_(2)`

B

`[Fe(H_(2)O)_(5)(NO)]^(2+)`

C

`[Fe(H_(2)O)_(5)(NO_(3))]^(+)`

D

`[Fe(H_(2)O)_(4)(NO)(NO_(3))]^(+)`

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