WAEC Chemistry 2022 Objective — Question 37
Question 37 of 50 from the West African Examinations Council (WAEC) Chemistry 2022 Objective paper, with the correct answer and a full explanation.
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Which of the following properties indicate that an element is a metal? It reacts with oxygen to form an acidic oxide. II. forms ionic chlorides. III. has variable oxidation states. IV. displaces hydrogen from dilute HCl?
- A. I and III only
- B. I and II only
- C. II and IV onlyCorrect
- D. I, II, III and IV
Explanation
Metals typically form ionic chlorides (II) and can displace hydrogen from dilute HCl if reactive enough (IV); forming acidic oxides (I) is characteristic of non-metals, so II and IV only are correct metal indicators.
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