关于原子结构的叙述正确的是_刷题宝

题干

关于原子结构的叙述正确的是（　　）

A：所有的原子核都是由质子和中子组成的

B：原子的最外层电子数不超过8个

C：稀有气体原子的最外层电子数均为8

D：原子的次外层电子数都是2

上一题下一题 0.0难度选择题更新时间:2019-09-03 08:59:47

答案(点此获取答案解析）

B

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