下列排列顺序正确的是①热稳定性：H2O＞HF＞H2S ②原子半径：Na＞Mg＞O③酸性：H3PO4＞H2SO4＞HClO4 ④结合质子能力：OH-＞CH3COO-＞Cl-_刷题宝

题干

下列排列顺序正确的是

①热稳定性：H₂O＞HF＞H₂S ②原子半径：Na＞Mg＞O
③酸性：H₃PO₄＞H₂SO₄＞HClO₄ ④结合质子能力：OH^-＞CH₃COO^-＞Cl^-

A：②④

B：①③

C：①④

D：②③

上一题下一题 0.0难度选择题更新时间:2019-11-19 01:03:27

答案(点此获取答案解析）

A

同类题1

根据短文内容，完成下列各小题。

It's four thirty in the afternoon. There are many students on the playground. Jim and his friends are playing basketball. Li Lei and other boys are playing football. Miss Gao is watching the games. She is looking after the clothes, too. Where are the girls? They are over there. Some are running, others are jumping. The twins are on duty today. They are in the classroom. Lucy is cleaning the window, Lily is sweeping the floor. They are working hard. They are tired(疲倦的) but happy.

同类题2

一艘轮船从长江驶入东海，船的情况是( )。

同类题3

把二进制数110011_（2）化为十进制数是：____ ．

同类题4

The students____(be)having an English class.

同类题5

隋唐时，中书、门下、尚书三省长官都是宰相。这样做的目的是（）

小学学科试题库

初中学科试题库

高中学科试题库