A) \[_{84}{{X}^{220}}\]
B) \[_{86}{{X}^{222}}\]
C) \[_{83}{{X}^{224}}\]
D) \[_{83}{{X}^{215}}\]
Correct Answer: C
Solution :
By using \[{{n}_{\alpha }}=\frac{A-A'}{4}\] and \[{{n}_{\beta }}=2{{n}_{\alpha }}-Z+Z'\] Þ \[A'=A-4{{n}_{\alpha }}=236-4\times 3=224\] and \[Z'=({{n}_{\beta }}-2{{n}_{\alpha }}+Z)=(1-2\times 3+88)=83\]
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