Question

For the given complex ${\left[Co{Cl}_2\right(en\left){\left({NH}_3\right)}_2\right]}^{+}$, the number of geometrical isomers, the number of optical isomers and total number of isomers of all type possible respectively are:

• A. $2,2$ and $4$
• B. $2,2$ and $3$
• C. $2,0$ and $2$
• D. $0,2$ and $2$

Answer 1

The correct option is A $2,2$ and $4$

The complex forms two geometrical isomers.
This exists in d- and l-forms. Thus a total of 4 isomers are possible for the complex.