Coordination Compounds 1 Question 9

####9. Which one of the following complexes shows optical isomerism?

(2016 Main )

(a) cis [Co(en)2Cl2]Cl

(b) trans [Co(en)2Cl2]Cl

(c) [Co(NH3)4Cl2]Cl

(d) [Co(NH3)3Cl3]

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Answer:

Correct Answer: 9. (c)

Solution:

[Co(NH3)4Cl2]Cl can exist in both cis and trans forms that are given below:

trans- [Co(NH3)4Cl2]Cl (optically inactive)

cis- [Co(NH3)4Cl2]Cl (optically inactive) [Co(NH3)3Cl3] exists in fac and mer-isomeric forms and both are optically inactive.

fac-isomer (optically inactive)

mer-isomer (optically inactive)



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