15. When beryllium Be is bombarded by α particles, radiation X will be emitted from the target material. The nuclear reaction can be expressed as α + ⁹₄Be → ¹²₆C + X. What is radiation X?
(A)
(B)
(C)
(D)
(E) γ-ray

答案:登入後查看
統計: A(0), B(0), C(1), D(0), E(0) #3853530