下列微粒中,其最外层与最内层的电子数之和等于次外层电子数的是( )_刷题宝

题干

下列微粒中,其最外层与最内层的电子数之和等于次外层电子数的是( )

A：S

B：Mg

C：Cl

D：Be

上一题下一题 0.0难度选择题更新时间:2019-10-11 05:48:37

答案(点此获取答案解析）

A

同类题1

看图读一读，选择正确答案

⒈Jerry's grandma lives far from his home. He always goes to see her by taxi every Saturday.

⒉Jerry: Hi, Grandma. How are you?
Grandma: I'm fine, thank you. And you?
Jerry: Fine, thanks. Here are some biscuits for you.

Grandma: Thanks. Do you like your new school?

Jerry: Yes. I usually play basketball with my new friends after school.

⒊Grandma: What else (其他的）do you like?
Jerry: I like lunchtime. I like drinking cola. I always drink cola at lunch.

同类题2

许多地方被称为革命圣地，是因为它们跟重大的革命历史事件有关。下列历史关系对应不正确的是（）

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据所听到的内容选择正确答语（）

同类题4

下列事例中，属于防止惯性带来危害的是（）

同类题5

读图，回答下列问题。

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