本题目来源于试卷: Physics Unit30: Nuclear Physics and Radioactivity，类别为 国际高中通用物理
[单选题]
The mass of an atom r*rc20c7nf9l pz6zy*rx dx* uy(,g chh6, n (z6+k ekn4vawlzis
A. approximately equally divided between neutrons, protons, and electrons.
B. evenly divided between the nucleus and the surrounding electron cloud.
C. concentrated in the cloud of electrons surrounding the nucleus.
D. concentrated in the nucleus.
参考答案: D
本题详细解析:
暂无
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