1.

Which of the following complexes shows optical isomerism ? (en=ethylenediamine )

Answer»

`CIS[Co(EN)_(2)Cl_(2)]CL`
`trans[Co(en)_(2)Cl_(2)]Cl`
`[Co(NH_(3))_(4)Cl_(2)]Cl`
`[Co(NH_(3))_(3)Cl_(3)]`

ANSWER :A


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