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Question
Which one of the following complexes shows optical isomerism? (en = ethylenediamine)
Options
[Co(NH3)3Cl3]
cis[Co(en)2Cl2]Cl
trans[Co(en)2Cl2]Cl
[Co(NH3)4Cl2]Cl
MCQ
Solution
cis[Co(en)2Cl2]Cl
Explanation:
The trans isomer of [Co(en)2Cl2]+ contains a plane of symmetry and is optically inactive, whereas the cis isomer does not.
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Isomerism in Coordination Compounds - Stereoisomerism
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