WAEC Chemistry 2025 Objective — Question 31
Question 31 of 50 from the West African Examinations Council (WAEC) Chemistry 2025 Objective paper, with the correct answer and a full explanation.
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All of the following compounds are covalent except
- A. NO2
- B. SO3
- C. SO2
- D. KNO3Correct
Explanation
KNO3 is an ionic compound. It consists of potassium ions and nitrate ions (K+ and NO3-). NO2, SO3 and SO2 are all covalent compounds.
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