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4. Chemical bonding and molecular structure — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry4. Chemical bonding and molecular structure1 Mark
MCQ
$HF$ has highest boiling point among hydrogen halides, because it has
  • A
    lowest dissociation enthalpy
  • B
    strongest van der Waals’ interactions
  • ✓
    strongest hydrogen bonding
  • D
    lowest ionic character
✓

Answer

Correct option: C.
strongest hydrogen bonding
c
$HF$ has strong hydrogen bond. $\therefore $ It has highest boiling point among hydrogen halides. The strong hydrogen bond is due to more difference in electronegativity between $F$ and $H$ atoms

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