What distinguishes a monodentate ligand from a bidentate ligand?

Monodentate ligands form cyclic structures with metals, whereas bidentate ligands do not.

Monodentate ligands are larger than bidentate ligands.

Monodentate ligands donate one lone pair, while bidentate ligands donate two lone pairs.

Monodentate ligands are neutrally charged, whereas bidentate ligands are negatively charged.