Chemical BondingMedium
Question
Intramolecular hydrogen bonding is present in
Options
A.
B.HF
C.
D.
Solution
Sol. [Key Concept: Intramolecular hydrogen bonding]
Option (3), o-nitrophenol, places the phenolic OH next to the nitro group. Its OH hydrogen can bond to a nitro oxygen within the same molecule, giving a favourable six membered arrangement. The meta and para isomers cannot form this neighbouring intramolecular contact; HF mainly forms intermolecular hydrogen bonds. Hence, option (3).
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