WAEC Chemistry 2019 Objective — Question 2
Question 2 of 50 from the West African Examinations Council (WAEC) Chemistry 2019 Objective paper, with the correct answer and a full explanation.
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A solid substance with high melting and boiling points is likely to be
- A. a covalent compound
- B. a dative covalent compound
- C. an electrovalent compoundCorrect
- D. a non-metal
Explanation
Electrovalent (ionic) compounds have strong electrostatic forces between ions, giving them high melting and boiling points, unlike covalent compounds which generally have low melting and boiling points.
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