Nuclei - Result Question 73
74. In the nuclear decay given below:
[2009]
$ _Z^{A} X \longrightarrow _{Z+1}^{A} Y \longrightarrow _{Z-1}^{A-4} B^{*} \longrightarrow _{Z-1}^{A-4} B$,
the particles emitted in the sequence are
(a) $\gamma, \beta, \alpha$
(b) $\beta, \gamma, \alpha$
(c) $\alpha, \beta, \gamma$
(d) $\beta, \alpha, \gamma$
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Answer:
Correct Answer: 74. (d)
Solution:
- (d) $ _Z^{A} X \longrightarrow _{Z+1}^{A} Y: \beta, \underset{Z+1}{A} Y \longrightarrow _{Z-1}^{A-4} B^{*}: \alpha$
$ _{Z-1}^{A-4} B^{*} \longrightarrow _{Z-1}^{A-4} B: \gamma \quad(\beta, \alpha, \gamma) $
Mass number and charge number of a nucleus remains unchanged during $\gamma$ decay)
