NEET 2021 Chemistry question

Ethylene diaminetetraacetate (EDTA) ion is :

• (A)Hexadentate ligand with four "O" and two "N" donor atomsCorrect
• (B)Unidentate ligand
• (C)Bidentate ligand with two "N" donor atoms
• (D)Tridentate ligand with three "N" donor atoms