Q55 / 160 · JIPMER 2005 · Chemistry

H -bond is strongest in

  • A
    $\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}$
  • Correct answer
    B
    $\mathrm{H}-\mathrm{F}$
  • C
    $\mathrm{H}_2 \mathrm{O}$
  • D
    $\mathrm{CH}_3 \mathrm{COCH}_3$

Solution

All compound which have hydrogen atom attached to $\mathrm{F}, \mathrm{O}$ or N atom (i.e. highly electronegative atoms) exhibit H bonding. In the question HF exhibit strongest H bonding because F is most electronegative element.

Hence, the correct answer is option: 'B'.

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