WAEC Chemistry 2020 Objective — Question 49
Question 49 of 50 from the West African Examinations Council (WAEC) Chemistry 2020 Objective paper, with the correct answer and a full explanation.
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Calcium chloride is an ionic compound. Which of the following statements account for its ionic character? I. Calcium has high ionization energy. II. Calcium has low ionization energy. III. Chlorine has high electron affinity. IV. Chlorine has high ionization energy.
- A. I and II only
- B. I, II and IV only
- C. II, III and IV onlyCorrect
- D. I, II, III and IV
Explanation
Calcium has low ionization energy while chlorine has high electron affinity, which accounts for the ionic character of calcium chloride.
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