Physics Unit30: Nuclear Physics and Radioactivity (id: 0f0ae0e10)

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本题目来源于试卷: Physics Unit30: Nuclear Physics and Radioactivity，类别为 Generic Physics

[单选题]
An element with atom5jgws/(ula1kocecd0 0 eao;gg:(m 7dic number 88 goesr x4k xf2 7yf8df5d-kk through alpha decay. Its atomic number is now4- f2 rxkkff5k78ydx d

A. 80.
B. 84.
C. 86.
D. 88.


参考答案:  C


本题详细解析: 暂无