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JAMB Chemistry 1994 Question 11

Question 11

Periodic Table

Which of the following physical properties decreases down a group in the periodic table?

  1. A.Atomic radius
  2. B.Ionic radius
  3. C.Electropositivity
  4. D.Electronegativity
Show the answer and explanation

Answer: D (Electronegativity)

Explanation

Going down a group, atoms get bigger and the outer electrons are further from the nucleus, so the atom attracts bonding electrons less: electronegativity decreases. The other three increase.