MCQ
After one $\alpha $ and two $\beta $ emissions
- AMass number reduces by $3$
- ✓Mass number reduces by $ 4$
- CMass number reduces by $6$
- DAtomic number remains unchanged
✓
Answer
Correct option: B.
Mass number reduces by $ 4$
b
(b) $_{Z}{{X}^{A}}{{\xrightarrow{\alpha }}_{Z-2}}{{Y}^{A-4}}{{\xrightarrow{2\beta }}_{Z}}{{X}^{A-4}}$
(b) $_{Z}{{X}^{A}}{{\xrightarrow{\alpha }}_{Z-2}}{{Y}^{A-4}}{{\xrightarrow{2\beta }}_{Z}}{{X}^{A-4}}$
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