WAEC Chemistry 2025 Objective — Question 13

Question 13 of 50 from the West African Examinations Council (WAEC) Chemistry 2025 Objective paper, with the correct answer and a full explanation.

All the following compounds are ionic except

A. AgCl
B. KNO3
C. NO2Correct
D. (NH4)2CO3

Explanation

NO2 is a molecular (covalent) compound, formed by covalent bonds between nitrogen and oxygen sharing electrons; it does not form ions. AgCl, KNO3 and (NH4)2CO3 are all ionic compounds.

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