Post-UTME Physics 2016 Objective — Question 10
Question 10 of 20 from the Post-UTME Screening (Post-UTME) Physics 2016 Objective paper, with the correct answer and a full explanation.
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226Ra ---> 4He + 222Rn. In the equation above, the change in mass number by the conversion of radium into radon is
- A. 8
- B. 2
- C. 4Correct
- D. 6
Explanation
Mass number changes from 226 to 222, a change of 4, matching the mass number of the emitted alpha particle (4He).
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