Which one of the following species is a potential polydentate ligand (chelating agent)? A)NH₃ B)Cl^- C)CN^- D)H₂O E)C₂O₄^2-

Question

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Polydentate ligands (chelating agents) have multiple binding sites (or donor atoms) that can coordinate with a single metal ion. In option E, the ligand has multiple binding sites including a carbon atom (C), two oxygen atoms (O), and two sulfur atoms (S). Therefore, it can act as a chelating agent for a metal ion. The other options have only one potential donor atom and cannot act as chelating agents.

Which One of the Following Species Is a Potential Polydentate