MEDIUMMCQ SINGLEJEE Mains ChemistryInorganic ChemistryCoordination compoundsValence Bond Theory
Which of the following complex ions is paramagnetic?
A.[Fe(CN)6]4–
B.[Fe(CN)6]3–✓ Correct
C.[Fe(CN)5NO]2–
D.[Co(NO2)6]3–
Explanation
[Fe(CN)6]3– due to unpaired e– Fe 3d64s2 Fe+3 3d54s0 With strong ligand CN-
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