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NTA Abhyas NEET2020ChemistryChemical Bonding and Molecular StructurePractice

Which of the following has the highest heat of vaporization?

Options

  1. AHF
  2. BHCl
  3. CHBr
  4. DHI

Correct answer

A. HF

Step-by-step solution

HF forms strong intermolecular H-bonds and other hydrogen halides do not form intermolecular H-bonds. Van der Waals forces increase from HCl to HI. Consequently, HF has highest heat of vaporization here.

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