question_answer

In the uranium radioactive series, the initial nucleus is\[_{92}{{U}^{238}}\] and that the final nucleus is \[_{82}P{{b}^{206}}\]When uranium nucleus decays to lead, the number of \[\text{ }\!\!\alpha\!\!\text{ -}\]particles and \[\beta -\]particles emitted are

A)  \[8\alpha ,6\beta \]                                      

B)  \[6\alpha ,7\beta \]

C)  \[6\alpha ,8\beta \]                                      

D) \[4\alpha ,3\beta \]