MEDIUMMCQ SINGLEJEE Mains ChemistryInorganic ChemistryCoordination compoundsValence Bond Theory

Among [Ni(CO)4], [Ni(CN)4]2– and [NiCl4]2–

A.[Ni(CO)4] and [Ni(CN)4]2– are diamagnetic and

B.[NiCl4]2– and [Ni(CN)4]2– are diamagnetic and

C.[Ni(CO)4] and [Ni(CN)4]2– are diamagnetic and✓ Correct

D.[Ni(CO)4] is diamagnetic and [NiCl4]2– and

Explanation

[Ni(Cl4]2– is paramagnetic due to weak ligands complex. [Ni(Cl)4]2– is tetrahedral complex (sp3). [Ni(CN)4]2– and [Ni(CO)4] both are diamagnetic due to the presence of strong field ligands CN- and CO.

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