Which of the following substances contains ionic bonds?
Answer and explanation
Correct answer: C. Potassium chloride (KCl)
- Step 1: Potassium (K) is an alkali metal that loses an electron to chlorine (Cl), a halogen non-metal. Step 2. Electrostatic attraction between K+ and Cl- forms ionic bonding. Answer: Potassium chloride (KCl). Why not the others: CO2, CH4, and O2 consist exclusively of non-metals sharing electrons covalently.
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