MCQ
Which of the following is correct?
- AThere are 78 neutrons in 78Pt192
- B84Po214 → 82Pb210 + $\beta$
- C92U238 → 90Th234 + 2He4
- D90Th234 → 91Pa234+ 2He4
✓
Answer
- 92U238 → 90Th234 + 2He4
Explanation:
After release of helium, there will be decrease in atomic number by 2 and mass number by 4.
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