Question

Which of the following complex does not show geometrical isomerism
A. `[Co(NH_(3))_(4)Cl_(2)]^(+)`
B. `[Fe(NH_(3))_(2)(CN)_(4)]^(-)`
C. `[Cr(O x)_(3)]^(3-)`
D. `[Co(NH_(3))_(3)(NO_(2))_(3)]`

Answer 1

Correct Answer - C
Octahedral complexes of the type `MA_(4)X_(2),MA_(3)X_(3),MA_(4)X_(4),M(A A)_(2)X_(2),M(A A)_(2)XY` exist as cis and trans isomer
,brgt Therefore `M ( A A)_(3)` cannot exhibit geometrical isomerism.