1.

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

Answer»

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

Solution :`[Co(NH_(3))_(3)Cl_(3)]` exists in two geometrical forms fac-and mer-isomer.

Both these forms are optically inactive. Therefore, `[Co(NH_(3))_(3)Cl_(3)]` does not show OPTICAL isomerism.


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