EDTA is a:
AOctadentate ligand
BBidentate ligand
CMonodentate ligand
DHexadentate ligand
Answer & Solution
Correct answer: D. Hexadentate ligand
EDTA (ethylenediaminetetraacetate) has 6 donor atoms (4 carboxylate O and 2 amine N), making it hexadentate. Forms very stable octahedral complexes with metals. Used in chelation therapy for heavy metal poisoning.
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