Which of the following will not optilcal...

Which of the following will not optilcal isomers ?

`[Co(en)_(3)]^(3+)`

`[Co(NH_(3))_(3)(NO__(2))_(3)]`

`[Pt(en)_(2)CI_(2)]^(2+)`

`[CrCI_(2)("ox")_(2)]^(3-)`

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(b) Optical isomerism is shown by only those complexes which lack symmetry . Complex `[Co(NH_(3))_(4) (NO_(2))_(3)]` shows facial and mridional isomerirsm. Both isomers of his complex contain plane of symmetry .So it will not from optical isomers. Of this complex containt plane of symmetry. So it will not form optical isomers.

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Which of the following has an optical isomer ?

`[Zn(en)_2]^(2+)`

`[Zn(en)(NH_3)_2]^(2+)`

`[Co(en)_3]^(3+)`

`[Co(H_2O)_4(en)]^(3+)`

Which of the following has an optical isomer ?

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

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

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

`[Co(NH_(3))_(3)Cl]^(+)`

Which of the following has an optical isomer ?

`[Co(e n) (NH_(3))_(2)]^(2+)`

`[Co(H_(2)O)_(4)(e n)]^(3+)`

`[Co(e n)_(2)(NH_(3))_(2)]^(3+)`

`[Co(NH_(3))_(3)Cl]^(+)`

Which of the following will not optilcal isomers ?

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