本题目来源于试卷: Radioactivity，类别为 美国物理杯赛(Physics Bowl)
[单选题]
02.16: During a particuw 5prgc;lyyw b,+n99sn1 asu )l+ 6iw3 h(-,pcw-tyhnt gaqtj2ar kind of radioactive decay, a particle is emitted from the nucleus of an atom and the atom's atomic number increases by one. This decay necessarily involves the emission of ___+nhj ygaipt3ht(tq-- c 2w ,6w____ from the nucleus?
A. an alpha particle
B. a beta particle
C. a gamma ray
D. a proton
E. a neutron
参考答案: B
本题详细解析:
暂无
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