問題詳情
22. The nuclide
Th is radioactive. When one of these atoms decays, a series of α- and β-particle emissions occurs, taking the atom through many transformations to end up as an atom of
Pb. How many α particles are emitted in converting
Th into
Pb?
(A) 8
(B) 10
(C) 4
(D) 6
(E) 2
參考答案
