Which of the following pairs of coordination isomers exhibits linkage isomerism due to the presence of an ambidentate ligand?

💡 Solution & Explanation

Linkage isomerism occurs when a coordination compound contains an ambidentate ligand such as the nitrite ion, which can coordinate through either its nitrogen atom as nitro or its oxygen atom as nitrito. Coordination isomerism involves interchange of ligands between cationic and anionic entities. Ionization isomerism involves different anions outside the coordination sphere. Solvate isomerism differs by whether a solvent molecule acts as a ligand or occupies lattice space.