JEE Main 2020ChemistryCoordination CompoundsMediumMCQ

JEE Main 2020 — Coordination Compounds Question with Solution

JEE Main 2020 (02 Sep Shift 1)

Question

For octahedral MnII and tetrahedral NiII complexes, consider the following statements :

(I) both the complexes can be high spin.

(II) NiII complex can very rarely be of low spin.

(III) with strong field ligands, MnII complexes can be low spin.

(IV) aqueous solution of MnII ions is yellow in color.

The correct statements are :

Choose an option

Show full solutionCorrect option: C
Correct answer
CI, II and III only 

Step-by-step explanation

With weak field ligands Mn(II) will be of high spin and with strong field ligands it will be of low spin. Ni(II) tetrahedral complexes will be genrally of high spin due to sp3 hybridisation. It can very rarely be of low spin when ligand field is very strong.

Mn(II) is of light pink color in aqueous solution.

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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.