Question

The ligand which is used in the treatment of lead poisoning is

• A. D-penicillamine
• B. EDTA
• C. desferrioxime B
• D. cis-platin
• E. CO

Hint:

Chemistry Tip: EDTA is a famous chelating agent often asked in exams for lead poisoning treatment.

Answer 1

The Correct Option is B

Concept:
Lead poisoning is treated using chelation therapy. Chelating agents bind toxic metal ions strongly and help remove them from the body.
Step 1: Understand EDTA.
EDTA stands for: Ethylene Diamine Tetraacetic Acid It is a hexadentate ligand, meaning it can attach to a metal ion through six donor sites. Thus it forms very stable complexes with heavy metal ions like: $$Pb^{2+},\ Ca^{2+},\ Fe^{3+}$$
Step 2: Why useful for lead poisoning?}}
EDTA binds lead ions: $$Pb^{2+} + \text{EDTA} \rightarrow [Pb\text{-EDTA}]^{2-}$$ This complex is water-soluble and can be excreted from the body. Hence EDTA is used medically for lead toxicity.
Step 3: Check other options.

• D-penicillamine: used for Cu poisoning / Wilson's disease.
• Desferrioxime B: used for iron overload.
• Cis-platin: anticancer drug.
• CO: toxic ligand, not medicine.

Step 4: Final answer.
The correct ligand used in treatment of lead poisoning is: $$\boxed{\text{EDTA}}$$ Hence correct option is (B). :contentReference[oaicite:1]{index=1}