Nuclei - Result Question 92
94. In a given reaction
$ _{z} X^{A} \to _{z+1} Y^{A} \to _{z-1} K^{A-4} \to _{z-1} K^{A-4}$
Radioactive radiations are emitted in the sequence of
(a) $\alpha, \beta, \gamma$
(b) $\gamma, \alpha, \beta$
(c) $\beta, \alpha, \gamma$
(d) $\gamma, \beta, \alpha$
[1993]
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Answer:
Correct Answer: 94. (c)
Solution:
- (c) Increase of charge number by 1 indicates $\beta$ emission. Decrease of mass number by 4 and charge number by 2 indicates $\alpha$ emission. No change of mass number and charge number indicates $\gamma$-emission.
