WAEC Chemistry 2010 Objective — Question 11
Question 11 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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If X is a group III element, its oxide would be represented as
- A. A. X3O2
- B. B. X3O
- C. C. X2O3Correct
- D. D. XO3
Explanation
A group (III) element has a combining power of 3, while oxygen has a combining power of 2. Using these combining powers, the formula becomes X2O3.
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