本题目来源于试卷: 美国2021年物理杯赛真题 PHYSICS BOWL 2021，类别为 美国物理杯赛(Physics Bowl)
[单选题]
Any nucleus that emits an alpha particle or beta particle
A. always becomes a nucleus of a different element
B. may become a nucleus of a different element
C. becomes a different isotope of the same element
D. increases its mass number
E. increases its mass
参考答案: A
本题详细解析:
Both decays change the0)xk x/+ l3jmofdd(lrny2/q w number of protons in the nucleus.
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