WAEC Chemistry 2015 Objective — Question 12
Question 12 of 50 from the West African Examinations Council (WAEC) Chemistry 2015 Objective paper, with the correct answer and a full explanation.
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The alkaline earth metals have similar chemical properties because they
- A. are in the same period
- B. their salts are colourless
- C. have the same number of valence electronsCorrect
- D. are very reactive
Explanation
Elements in the same group (like the alkaline earth metals) have the same number of valence electrons, giving them similar chemical properties.
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