$[\mathrm{EDTA}]^{4-}$ is a :

• A

  monodentate ligand
• B

  bidentate ligand
• C

  quadridentate ligand
• Correct answer
  D

  hexadentate ligand

Solution

It can act as hexadentate ligand as it has six donar atoms ( 2 nitrogen atoms and 4 oxygen atom).

Hence, the correct answer is option: 'D'.