1.

Which one of the following has an optical isomer ?

Answer»

`[Co(H_(2)O)_(4) (en)]^(3+)`
`[Zn (en)_(2)]^(2+)`
`[Zn(en)(NH_(3))_(2)]^(2+)`
`[Co(en)_(3)]^(3+)`

SOLUTION :`[Co(en)_(3)]^(3+)` exists as enantiomeric PAIR and shows optical activity.


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