Engineering Board Exam Reviewer · Chemistry · medium
When 238U (Z = 92) emits an alpha particle, the product nucleus is:
- 234U (Z = 92)
- 238Np (Z = 93)
- 236Pa (Z = 91)
- 234Th (Z = 90)
Answer
D. 234Th (Z = 90)
Solution
Alpha emission lowers A by 4 and Z by 2.
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