Question
How many geometrical isomers are possible in the following coordination entities?
[Co(NH3)3Cl3].
Solution
The two entities are represented as:

Fig. Geometrical isomers of [Co(NH3)3Cl3].
Two geometrical isomers Facial and Meridional are possible.

Fig. Geometrical isomers of [Co(NH3)3Cl3].
Two geometrical isomers Facial and Meridional are possible.