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In which of the following pairs both the...

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

A

`cis- [Cr (C_2O_4)_2 Cl_2]^(3-) , mer -[Co(gly)_3]`

B

`[Co (en)_3] Cl_3, cis- [Co (en)_2 Cl_2]Cl`

C

`[Pt Cl (dien) Cl, [Ni Cl_2(PPh_3)_2]`

D

`[Co(NO_3)_3 (NH_3)_3, cis - [Pt (en)_2 Cl_2]Cl_2`

Text Solution

Verified by Experts

The correct Answer is:
A,B

( C)`[Pt Cl(dien)]Cl`, complex is square planar whereas `[Ni Cl_2(PPh_3)_2]` is tetrahedral.
(D)`[Co (NO_3)_3 (NH_3)_3]` has plane of symmetry but cis- `[Pt (en)_2 Cl_2]Cl_2` shows optical isomerism.
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