1.

Which of the following complex species is not expected to exhibit optical isomerism?

Answer»

`[Co(EN)(NH_(3))_(2)Cl_(2)]^(+)`
`[Co(en)_(3)]^(3+)`
`[Co(en)_(2)Cl_(2)]^(+)`
`[Co(NH_(3))_(3)Cl_(3)]`

SOLUTION :`[Co(NH_(3))_(3)Cl_(3)]` SHOWS cis or facial (fac) as well as trans or meridional (mer) isomers. But both these isomers contain plane of symmetry. So they do not exhibit optical isomerism.


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