稀有气体元素的原子，最外层电子数可能是①8 ②3 ③4 ④2．_刷题宝

题干

稀有气体元素的原子，最外层电子数可能是（　　）

①8 ②3 ③4 ④2．

A：①与④

B：②与③

C：①与②

D：只有①

上一题下一题 0.0难度选择题更新时间:2019-12-08 05:10:05

答案(点此获取答案解析）

A

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