WAEC Chemistry 2018 Objective — Question 38
Question 38 of 50 from the West African Examinations Council (WAEC) Chemistry 2018 Objective paper, with the correct answer and a full explanation.
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Which of the following statements about ionic radius is correct? Ionic radius
- A. increase as nuclear charge increases
- B. decreases as nuclear charge increasesCorrect
- C. decreases as nuclear charge decreases
- D. remains constant as nuclear charge increases
Explanation
Across a period, as nuclear charge increases, the increased pull on electrons causes ionic (and atomic) radius to decrease.
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