Physics Unit30: Nuclear Physics and Radioactivity (id: fb420d170)

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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]
The half-life of radioactive iomu 4t,0ohyv qv 0kz-ib+w5zg.dine-137 iln2 qf.g y;sud/hz4 ic(lnv8+s 8.0 days. How many iodine nuclei are n.;h/ciul +y8 f2 zgn(vql4sd necessary to produce an activity of $1.0 \; \mu Ci$?

A. $2.9 \times 10^{9}$
B. $4.6 \times 10^{9}$
C. $3.7 \times 10^{10}$
D. $7.6 \times 10^{12}$


参考答案:  C


本题详细解析: 暂无