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CBSE - XII Science - Chemistry - Coordination Compounds

Which one of the following has an optical isomer 
a. [Co(en)3]3+
b. [Zn(en)2]2+
Why? Give the full explanation that it will help me in other example!!

Asked by ADITYASEN704 11th June 2016, 9:00 PM
Answered by Expert


The correct answer is [Co(en)3]3+
Square planarcomplexes of Zn2+ cannot show optical isomerism. Hence, it is ruledout. It will have two planes of symmetry. Thus, it is optically inactive.
As [Co(en)3]3+ has no plane of  symmetry it is optically ACTIVE.
Answered by Expert 12th June 2016, 2:12 AM

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