Physics Unit30: Nuclear Physics and Radioactivity (id: 8f10833e3)

admin

本题目来源于试卷: Physics Unit30: Nuclear Physics and Radioactivity，类别为 Generic Physics

[单选题]
When a gamma ray is emitted frd4y7vj- zi l.vom an unsta6 cd /t-lz01yu:a1xu spt qxjb .0)jyzble nucleus,

A. the number of neutrons and the number of protons drop by two.
B. the number of neutrons drops by one and the number of protons increases by one.
C. there is no change in either the number of neutrons or the number of protons.
D. none of the given answers


参考答案:  C


本题详细解析: 暂无