Ethylene diaminetetraacetate ion is a/an:

• Correct answer
  A

  hexadentate ligand
• B

  ambidentate ligand
• C

  monodentate ligand
• D

  bidentate ligand

Solution

It is hexadentate as it can bind through two nitrogen and four oxygen atoms to a central metal ion.

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