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JAMB Chemistry 1987 Question 11

Question 11

Chemical Bonding

The greater the difference in electronegativity between bonded atoms, the

  1. A.lower the polarity of the bond
  2. B.higher the polarity of the bond
  3. C.weaker the bond
  4. D.higher the possibility of the substance formed being a molecule.
Show the answer and explanation

Answer: B (higher the polarity of the bond)

Explanation

A bigger electronegativity difference pulls the shared electrons more towards one atom, so the bond becomes more polar (and eventually ionic).