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The correct structure of histidine in a strongly acidic solution (pH = 2) is -

1. H 3 N–CH–COO NH N ⊕ H ⊕ Θ
2. H 3 N–CH–COOH NH N ⊕ H ⊕
3. H 3 N–CH–COO NH 2 N ⊕ ⊕ ⊕ Θ
4. H 3 N–CH–COOH NH 2 N ⊕ ⊕ CAREER POINT CAREER POINT , CP Tower, IPIA, Road No.1, Kota (Raj.), : 0744-6630500 | www.ecareerpoint.com Email: info@cpil.in Page # 8 JEE Main Online

Correct answer: H 3 N–CH–COOH NH N ⊕ H ⊕

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