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JEE Main20199 Apr 2019Evening ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

H F has highest boiling point among hydrogen halides, because it has:

Options

  1. Alowest dissociation enthalpy
  2. Bstrongest van der Waals’ interactions
  3. Cstrongest hydrogen bonding
  4. Dlowest ionic character

Correct answer

C. strongest hydrogen bonding

Step-by-step solution

Boiling point is directly proportional to intermolecular Forces. Since Fluorine is highly electronegative element it forms hydrogen bonding. Because of H - bonding H F has high boiling point.

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