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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
Which of the following is a polar compound
  • ✓
    $HCl$
  • B
    ${H_2}Se$
  • C
    $C{H_4}$
  • D
    $HI$
✓

Answer

Correct option: A.
$HCl$
(a) Higher is the difference in electronegativity of two covalently bonded atoms, higher is the polarity. In $HCl$ there is high difference in the electronegativity of $H$ and $Cl$ atom so it is a polar compound.

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