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WAEC Chemistry 2014 Theory — Question 2

Question 2 of 38 from the West African Examinations Council (WAEC) Chemistry 2014 Theory paper, with the correct answer and a full explanation.

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1(a)(ii). What type of bond(s) exist(s) in: I. magnesium oxide; II. ammonium ion?

Model answer

I. Magnesium oxide (MgO): Ionic bond. II. Ammonium ion (NH₄⁺): Covalent bond and dative (coordinate) bond.

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