Chemistry - Coordination Chemistry Question with Solution | TestHub

Coordination Position Isomerism (D): This occurs when the distribution of ligands around the two metal centers changes (e.g., swapping an $en$ ligand with $N{H}_3$ and $py$ ligands).

Geometrical Isomerism (C): The relative positions of the ligands around each cobalt center can vary (cis/trans arrangements), leading to different geometric forms.

Optical Isomerism (B): Due to the presence of chelating ethylenediamine ($en$) ligands and the asymmetric distribution of ligands across the bridged structure, the molecule lacks a plane of symmetry, making it chiral.

Linkage Isomerism (A): This is incorrect because none of the ligands present ($en$, $C{l}^{-}$, $N{H}_3$, $py$) are ambidentate; they only have one way to bond to the metal.