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Cold ferrous sulphate solution on absorp...

Cold ferrous sulphate solution on absorption of `NO` develops brown colour due to the formation of -

A

paramagnetic `[Fe(H_(2)O)_(5)NO]SO_(4)`

B

diamagnetic `[Fe(H_(2)O)_(5)(N_(3))]SO_(4)`

C

paramagnetic `[Fe(H_(2)O)_(5)(NO_(3))](SO_(4))_(2)`

D

diamagnetic `[Fe(H_(2)O)_(4)(SO_(4))]NO_(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
Brown coloured solution contains `[Fe(H_(2)O)_(5)(NO)]SO_(4)`. Here central metal ion contains unpaired electron. Thus it shows paramagnetism.
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