本题目来源于试卷: Physics Unit30: Nuclear Physics and Radioactivity，类别为 通用国际物理
[单选题]
When a gamma ray is emitwh,yxoy4d 2o 3hmv+/itcb,lv lo 4aa11a7e3yted from an unstable 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
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