Physics Unit30: Nuclear Physics and Radioactivity (id: 4db66d3d4)

admin

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

[单选题]
The number of proton;jix h- deot 3zdyf) 3n)6qn/s6 :5u*yee*nlhmkmc oqq :f1zvqw1t,-s in an atom is

A. zero.
B. equal to the number of neutrons.
C. equal to the number of electrons.
D. the same for all elements.


参考答案:  C


本题详细解析: 暂无