WAEC Chemistry 2014 Objective — Question 9
Question 9 of 50 from the West African Examinations Council (WAEC) Chemistry 2014 Objective paper, with the correct answer and a full explanation.
Advertisement
An atom W has 17 electrons and 18 neutrons. Which of the following representations of the atom is correct?
- A. ¹⁷₁₈W
- B. ¹⁸₁₇W
- C. ³⁵₁₇WCorrect
- D. ³⁵₁₈W
Explanation
Mass number = protons + neutrons = 17+18 = 35. So W is represented as ³⁵₁₇W.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.