JEE Main 2020ChemistryCoordination CompoundsCrystal Field Theory CftmediumMCQ

JEE Main 2020Coordination Compounds Question with Solution

From: JEE Main 2020 (Online) 4th September Evening Slot

Question

The one that can exhibit highest paramagnetic behaviour among the following is :

gly = glycinato; bpy = 2, 2'-bipyridine

Choose an option

Show full solutionCorrect option: C
Correct answer
C[Co(OX)2(OH)2] (0 > P)

Step-by-step explanation

[Co(OX)2(OH)2]

(As here 0 > P so those ligands act as strong field ligand and pairing happens.)

27Co+5 = [18Ar] 3d4 4s0( )

It has highest number of unpaired e s. so it is most paramagnetic.

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About this question

This is a previous-year question from JEE Main 2020, 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.