WAEC Chemistry 2010 Objective — Question 7
Question 7 of 49 from the West African Examinations Council (WAEC) Chemistry 2010 Objective paper, with the correct answer and a full explanation.
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Which of the following elements is a d-block element?
- A. A. Calcium
- B. B. IronCorrect
- C. C. Lithium
- D. D. Silicon
Explanation
Iron (Fe) is a transition element, it is a d-block element: 26Fe = 1s²2s²2p⁶3s²3p⁶4s²3d⁶.
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