A) \[_{82}{{U}^{206}}\]
B) \[_{82}P{{b}^{206}}\]
C) \[_{82}{{U}^{210}}\]
D) \[_{82}{{U}^{214}}\]
Correct Answer: B
Solution :
\[_{(Z=92)}{{U}^{(A=238)}}{{\xrightarrow{(8\alpha ,\,6\beta )}}_{{{Z}'}}}{{X}^{{{A}'}}}\] so \[{A}'=A-4{{n}_{\alpha }}\]= 238 ? 4 ´ 8 = 206 and \[{Z}'={{n}_{\beta }}-2{{n}_{\alpha }}+z\]= 6 ? 2 ´ 8 + 92 = 82.
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