Bidentate ligands have two donor atoms which allow them to bind to a central metal atom or ion at two points. Common examples of bidentate ligands are ethylenediamine (en), and the oxalate ion (ox).
No, Ammonia is a monodentate ligand since it binds through only one donor atom (nitrogen).
According to this classification, ligands are divided into two types – chelating agents and ambident ligands: Chelating Agents: These are the ligands that are bonded with the same central metal atom or ion and form a ring-type structure. Usually, bidentate or polydentate ligands fall under this category.
Learn more about bidentate ligands here:
