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JAMB Chemistry 2004 Question 11

Question 11

Chemical Bonding

The property of chlorine which causes hydrogen chloride to be more ionic than the chlorine molecule is its

  1. A.electrovalency
  2. B.electron affinity
  3. C.electropositivity
  4. D.electronegativity
Show the answer and explanation

Answer: D (electronegativity)

Explanation

Chlorine is much more electronegative than hydrogen, so it pulls the shared electrons towards itself, making H–Cl polar. In Cl2 both atoms pull equally.