Stereoisomerism arises on account of different positions and arrangement of lignads in space around the metal ion . These are classified into two types : (i) Geometrical isomerism is exhibited by octahedral and square planar complexes . (ii) Optical isomerism is shown when mirror images are non superimposable. Both geometrical and optical isomerism are shown by

Stereoisomerism arises on account of different positions and arrangeme

1.	Stereoisomerism arises on account of different positions and arrangement of lignads in space around the metal ion . These are classified into two types : (i) Geometrical isomerism is exhibited by octahedral and square planar complexes . (ii) Optical isomerism is shown when mirror images are non superimposable. Both geometrical and optical isomerism are shown by
Answer» `[Co(en)_(2)Cl_(2)]^(+)` `[Co(NH_(3))_(5)CL]^(2+)` `[Co(NH_(3))_(4)Cl_(2)]` `[CR(OX)_(3)]^(3-)` Solution :The compound SHOWS both geometrical & optical ISOMERISM.