The complex cation which has two isomers is:

Question

Canvas Classes · Accepted Answer

Strategy:
 Look for the potential to form isomers, identifying the presence of ambidentate ligands (yielding linkage isomers) or geometric flexibility.

Step 1: Analyze each complex
- : All ligands are identical (homoleptic). No isomerism possible.
- :  geometry. Only one spatial arrangement is possible.  is not purely ambidentate in this context. No isomerism.
- : The  ligand is an ambidentate ligand. It can bind through the nitrogen atom (producing the yellow nitro complex, ) or through an oxy

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