問題詳情

39. Which of the following statements about nuclear reaction and stability are TRUE?
(A) A radioactive nuclide that decays from

atoms to 2.5 x 109 atoms in 10.0 minshas a half-life of 5.0 mins.
(B) Nuclides with large Z values are often observed to be a-particle producers.
(C) As Z increases, , nuclides need a greater proton-to-neutron ratio for stability.
(D) Those "light" nuclides that have twice as many neutrons as protons are expected to bestable.
(E) If more than one neutron from each fission event causes another fission event, the fissionsituation is described as supercritical.

參考答案

答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增