本题目来源于试卷: Physics Unit30: Nuclear Physics and Radioactivity，类别为 Generic Physics
[单选题]
When an alpha particle is emitted from y3qx8lb,axd 6 an unstable nucleus, thghuspf 0j6 -qv)8j n95r+v ylme atomic number of the n q u698l)jyvmns+05 gvfph -jrucleus
A. increases by 2.
B. decreases by 2.
C. increases by 4.
D. decreases by 4.
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