Why does hydrogen fluoride have a higher boiling point than hydrogen chloride?
Answer and explanation
Correct answer: A. It forms hydrogen bonds between molecules
- Step 1: Fluorine is very electronegative and small, with lone pairs. Step 2. H-bonds between HF molecules are stronger than the permanent dipole interactions in HCl. Answer: It forms hydrogen bonds between molecules. Why not the others: boiling does not break the covalent bond; HCl has more electrons than HF; HCl has the larger molecular mass.
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