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

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry4. Chemical bonding and molecular structure1 Mark
MCQ
Contrary to other hydrogen halides, hydrogen fluoride is a liquid because
  • A
    Size of $F$ atom is small
  • B
    $HF$ is a weak acid
  • ✓
    $HF$ molecule are hydrogen bonded
  • D
    Fluorine is highly reactive
✓

Answer

Correct option: C.
$HF$ molecule are hydrogen bonded
c
$HF$ has strong hydrogen bonding, so the force between molecules is stronger for this than in other hydrogen halides.Hence, $HF$ is a liquid at room temperature and other hydrogen halides are gases.

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