Question

The donor atoms in Ethylenediaminetetraacetic acid (EDTA) are:

• A. Two $N$ and two $O$
• B. Two $N$ and four $O$
• C. Four $N$ and two $O$
• D. Three $N$ and three $O$

Answer 1

The correct option is B Two $N$ and four $O$

EDTA is an hexadentate ligand which has six donor atoms with electron pairs that can be used to bond to a central metal atom or ion.