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 fro*mmengr ziv;y .3fl1 ,m an unstablejpa3 u3 ajgqae28u4n6 nucleus, the atomic number of ta g233jjua 84puaneq 6he nucleus
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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