Number of molecules from the following which can exhibit hydrogen bonding is

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Canvas Classes · Accepted Answer

Hydrogen bonding requires H bonded to a highly electronegative atom (F, O, or N).

Step 1 — Analyse each molecule:

| Molecule | H bonded to electronegative atom? | H-bonding? |
|----------|----------------------------------|------------|
|  | O–H present | Yes ✓ |
|  | O–H present | Yes ✓ |
|  | Only C–H bonds | No ✗ |
|  | Only C–H bonds | No ✗ |
| o-nitrophenol | O–H present (intramolecular H-bond) | Yes ✓ |
| HF | F–H present | Yes ✓ |
|  | N–H present | Yes ✓ |

Step 2: , o-nitrophenol, HF,

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