allery**EDTA** (ethylenediaminetetraacetate) is a:
AMonodentate ligand
BBidentate ligand
CTetradentate ligand
DHexadentate ligand
Answer & Solution
Correct answer: D. Hexadentate ligand
EDTA binds via 4 oxygen donors (from 4 carboxylate groups) + 2 nitrogen donors = **6** donor atoms — hence hexadentate.
It chelates metal ions in an octahedral cage
used in water-softening and titrations.
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