Q.

Which of the following complex has a possibility to exist as meridional isomer                      [2023]

1 [Co(NH3)3(NO2)3]  
2 [Co(en)2Cl2]  
3 [Pt(NH3)2Cl2]  
4 [Co(en)3]  

Ans.

(1)

[Ma3b3] can show facial and meridional isomerism.