下列各组微粒具有相同的质子数和电子数的是_刷题宝

题干

下列各组微粒具有相同的质子数和电子数的是（）

A：OH^﹣、H₂O、F^﹣

B：NH₃、NH₄⁺、NH₂^﹣

C：H₃O⁺、NH₄⁺、NH₂^﹣

D：HCl、F₂、H₂S

上一题下一题 0.0难度选择题更新时间:2010-11-29 10:27:17

答案(点此获取答案解析）

D

同类题1

下列各图中，∠1与∠2互为余角的是（）

同类题2

根据对话内容和所给首字母，在对应空格内填入一个适当的单词，使对话意思完整，所填单词必须完整写出。

A: Hello! May I speak to David, please?

B: Hello! This is David speaking. Who's t____?

A: Simon speaking. What are you going to do tomorrow?

B: I have no i____. Do you have any plans?

A: Yes. Shall we go to the zoo?

B: Good idea. We can see different kinds of animals there. A____ them, I like pandas best.

A: So do I. I can't wait to see them. B____ the way, can we feed the pandas?

B: No, I'm afraid not. It may h____them.

A: I see. Can you take your c____ with you? Mine is broken.

B: No problem. How can we get there?

A: The No.8 bus can take us there.

B: When shall we meet?

A: Let's m____ it half past eight in the morning.

B: All right. See you then at the school gate.

A: See you.

同类题3

利用某有机物之间的转换可以贮存太阳能，如降冰片二烯（NBD）经太阳光照可转化成四环烷（Q），其反应式可表示为：

△H=+88.62kJ/mol

下列有关说法不正确的是（　　）

同类题4

下列卤代烃在KOH醇溶液中加热不反应的是：（）
①C₆H₅Cl ②(CH₃)₂CHCH₂Cl ③(CH₃)₃CCH₂Cl ④CHCl₂-CHBr₂⑤

同类题5

The Los Angeles district attorney on Monday charged Michael Jackson's personal physician, Conrad Murray, ______ involuntary manslaughter

in connection with the pop icon's death in June.

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