JEE Main 2021ChemistryCoordination CompoundsIsomerism Of Coordination CompoundsmediumNumerical

JEE Main 2021Coordination Compounds Question with Solution

From: JEE Main 2021 (Online) 26th February Evening Shift

Question

The number of stereoisomers possible for [Co(ox)2(Br)(NH3)]2 is ___________. [ox = oxalate]

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Show full solutionCorrect answer: 3
Correct answer
3

Step-by-step explanation

The coordination compound [Co(ox)2(Br)(NH3)]2 of general formula [M(A - A)2BC] can show both geometrical and optical isomerism (stereoisomerism).

JEE Main 2021 (Online) 26th February Evening Shift Chemistry - Coordination Compounds Question 203 English Explanation 1

The cis-form produces non-superimposable mirror images, i.e. enantiomeric pairs (optically active)

JEE Main 2021 (Online) 26th February Evening Shift Chemistry - Coordination Compounds Question 203 English Explanation 2

The trans-form is optically inactive.

So, total number of stereoisomers possible = cis( ) + trans = 3

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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.