Physics Unit30: Nuclear Physics and Radioactivity (id: 41214f55c)

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]
Alpha particles havez*5f+*f e*hqicji q k 58egi5h an atomic mass equal(ivh fh wga2,7 to

A. 1.
B. 2.
C. 4.
D. 6.


参考答案:  C


本题详细解析: 暂无

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