Question

The complex that can show fac- and mer-isomers is:

• A. $\left[Co\right(N{O}_2{)}_3\left(N{H}_3{)}_3\right]$
• B. $\left[PtC{l}_2\right(N{H}_3{)}_2]$
• C. $\left[Co\right(N{H}_3{)}_{4}C{l}_2{]}^{+}$
• D. $\left[CoC{l}_2\right(en{)}_2]$

Answer 1

The correct option is A $\left[Co\right(N{O}_2{)}_3\left(N{H}_3{)}_3\right]$

Facial and meridional geometrical isomerism is observed only in $\left[M{A}_3{B}_3\right]$ type complexes.