JAMB Chemistry 1987 Question 9

Question 9

Chemical Bonding

The atomic numbers of two elements X and Y are 12 and 16 respectively. The bond in the compound formed between the atoms of these two elements is

  1. A.ionic
  2. B.covalent
  3. C.neutral
  4. D.co-ordinate
Show the answer and explanation

Answer: A (ionic)

Explanation

Element 12 is magnesium, a metal that loses 2 electrons; element 16 is sulphur, a non-metal that gains 2. Electron transfer gives an ionic bond.