A) Two \[\alpha \]-particles and one \[\beta \]-particles
B) Three \[{{\beta }^{+}}\] particles
C) One \[\alpha \]-particle and two \[{{\beta }^{+}}\] particles
D) One \[\alpha \]-particle and two \[{{\beta }^{-}}\] particles
Correct Answer: A
Solution :
[a] By using \[{{n}_{\alpha }}=\frac{A-A'}{4}\] and \[n\beta =2{{n}_{\alpha }}-Z+Z'\]
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