WAEC Chemistry 2025 Objective — Question 7
Question 7 of 50 from the West African Examinations Council (WAEC) Chemistry 2025 Objective paper, with the correct answer and a full explanation.
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The nucleus of a hydrogen atom consists of
- A. one proton onlyCorrect
- B. one proton and one neutron only
- C. one neutron only
- D. one electron only
Explanation
The most common hydrogen isotope, protium, has one proton, one electron and no neutron. Electrons are located outside the nucleus, so the nucleus of the most common hydrogen atom contains only one proton.
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