Question

The donor sites of $EDTA$ ligand are

• A. $O$ atoms only
• B. $N$ atoms only
• C. two $N$ atoms and four $O$ atoms
• D. three $N$ atoms and three $O$ atoms.

Answer 1

Answer: (C)

The structure of $EDTA$ ion is



$1 $ and $2$ are donor $N$ atoms and $3,4, 5$ and $6$ are donor $O$ atoms.