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JAMB Chemistry 2011 Question 13

Question 13

Chemical Bonding

What type of bond exists between an element X with atomic number 12 and Y with atomic number 17?

  1. A.Electrovalent.
  2. B.Metallic.
  3. C.Covalent.
  4. D.Dative.
Show the answer and explanation

Answer: A (Electrovalent.)

Explanation

X is magnesium (a metal, gives 2 electrons) and Y is chlorine (a non-metal, gains 1), so they form an ionic (electrovalent) bond in MgCl2.