1.

In which of the following pairs both the complexes do not show optical isomerism ?

Answer»

`cis-[Cr(en)_(2)Cl_(2)]" and "cis-[CO(NH_(3))_(4)Cl_(2)]`
`[Co(gly)_(3)]" and "cis-[CoCl_(2)(en)_(2)]`
`[PT(en)Cl_(2)]" and "fac-[Ni(NH_(3))_(3)Cl_(3)]`
`MER-[Co(NO_(3))_(3)(NH_(3))_(3)]" and "[PtCl_(2)(en)]`

Solution :`[Co(NH_(3))_(4)Cl_(2)]` does not show O.I.
`[Pt("en")Cl_(2)]` does not show O.I. and G.I.


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