The bond in a hydrogen chloride molecule is
Correct answer: B. polar covalent, with the shared pair drawn towards chlorine
- A. purely ionic
- B. polar covalent, with the shared pair drawn towards chlorine
- C. non polar covalent
- D. metallic
Explanation
Chlorine is more electronegative than hydrogen, so the shared electrons sit closer to it, giving chlorine a partial negative charge and hydrogen a partial positive one. The electronegativity difference is not large enough for complete transfer, so the bond is polar rather than ionic. This polarity is why hydrogen chloride dissolves readily in water and ionises there.
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About Dipole Moment
Dipole moment measures the separation of positive and negative charge in a bond or molecule, with magnitude related to charge and distance, μ = q r. Questions distinguish polar bonds from polar molecules by considering bond direction, molecular geometry and whether individual bond moments cancel through symmetry.
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