In the coordination complex [Co NH3 5Cl]2+, there is one cobalt Co atom at the center, surrounded by five ammine NH3 ligands and one chloride Cl ligand. This complex exhibits both geometric and optical isomerism.1. Geometric isomerism:Geometric isomers are coordination compounds with the same formula but different spatial arrangements of the ligands. In the case of [Co NH3 5Cl]2+, there are two possible geometric isomers:a Cis-isomer: The chloride ligand and one of the ammine ligands are adjacent to each other in the complex.b Trans-isomer: The chloride ligand and one of the ammine ligands are opposite to each other in the complex.However, since the coordination number is 6 and the complex has an octahedral geometry, the cis-trans isomerism is not applicable in this case. Therefore, there are no geometric isomers for [Co NH3 5Cl]2+.2. Optical isomerism:Optical isomers are non-superimposable mirror images of each other, like left and right hands. They have the ability to rotate plane-polarized light in opposite directions. In the case of [Co NH3 5Cl]2+, there are no optical isomers because the complex is symmetrical and has a center of symmetry. When you draw the mirror image of the complex, it is identical to the original complex, making it achiral.In conclusion, the coordination complex [Co NH3 5Cl]2+ does not exhibit geometric isomerism and is achiral, meaning it does not have optical isomers.