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QJEEM21Ch8ead: JEE Main 2021 Chemistry - Class 12 JEEM21Ch8ead Solution: The number of stereoisomers possible for [Co(ox) 2 (Br)(NH 3 )] …

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

Step-by-Step Verified Solution

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 178 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 178 English Explanation 2

The trans-form is optically inactive.

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

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