JEE Main 2021ChemistryCoordination CompoundsMediumMCQ

JEE Main 2021 — Coordination Compounds Question with Solution

JEE Main 2021 (27 Jul Shift 2)

Question

Given below are two statements :
Statement I: Mn(CN)63-,  Fe(CN)63- and CoC2O433- are d2sp3 hybridised.
Statement II : MnCl63- and FeF63- are paramagnetic and have 4 and 5 unpaired electrons, respectively. 

In the light of the above statements, choose the correct answer from the options given below:

Choose an option

Show full solutionCorrect option: D
Correct answer
DBoth statement I and statement II are are true

Step-by-step explanation

CN- is strong field ligand. C2O42- is chelating ligand. Mn3+ has d4 configuration. Fe3+ has d5 configuration. Co3+ has d6 configuration.

⇒ All will have larger splitting values hence, they undergo d2sp3 hybridisation.

MnCl63-                              FeF63-

d4 configuration, Cl-             d5 configuration, F-

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About this question

This is a previous-year question from JEE Main 2021, covering the Coordination Compounds chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.