本题目来源于试卷: Physics Unit30: Nuclear Physics and Radioactivity，类别为 Generic Physics
[单选题]
When a neutron is emitter hoes+2w+ch4 di,,mpmvd3/m4.fy *es.a 3 dyd5clmh z from an unstable nucleus, the atomic mass number of the nucleus m*dvh.m,myf5dp lsame c/3zy. 3,4i d
A. increases by 1.
B. decreases by 1.
C. does not change.
D. none of the given answers
参考答案: B
本题详细解析:
暂无
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Post time 2024-1-22 01:01:29