Class 12 NEET Chemistry Coordination Compounds

[Co(NH3)4Cl2]+ is an octahedral complex, in the form of [MA4B2] exhibiting two geometrical isomers (cis and trans). This results in two different coloured complexes.Compounds which possess the same structural formula, but differ with respect to the positions of the identical groups in space are called cis-trans isomers and the phenomenon is known as Geometrical isomerism.