Question

When one 'a' is replaced by 'b' in $\left[M\right(AA)a_{2}bc{]}^{n\pm }$ type of complex, then total number of geometrical isomers is increases by

Answer 1

In $\left[M\right(AA)a_{2}bc{]}^{n\pm }$ when a is replaced by b, we get $\left[M\right(AA)b_{2}ac{]}^{n\pm }$
All ligand situations are same in both complex so no change in total number of geometrical isomerism
Geometrical Isomers $=4$ in $\left[M\right(AA)a_{2}bc{]}^{n\pm }$ and also geometrical isomers are $4$ in $\left[M\right(AA)b_{2}ac{]}^{n\pm }$ .
Isomers for $\left[M\right(AA)a_{2}bc{]}^{n\pm }$
Isomers for $\left[M\right(AA)b_{2}ac{]}^{n\pm }$ .