Question

The closed ring compounds formed by bidentate ligands, on binding to a metal or metal ions, are called:

• A. Monodentate
• B. Chelates
• C. Ambidentate
• D. None of these

Answer 1

The correct option is B Chelates

Ligand which have two donor sites (atoms) but at a time only one site (atom) donates are known as ambidentate ligand.
Unidentate ligands: Ligands which have only one e donor atom.
Bidentate ligands: Ligands which have two donor atoms and have the ability to link with central metal ion at two positions are called bidentate ligands.
Polydentate ligand forms atleast four member rings with central metal ion show chelation. These ligands are known as chelating ligand.