问题 选择题

下列事实中,能说明氯的非金属性比硫强的是①HClO的氧化性比H2SO4的氧化性强②常温下氯气是气态而硫是固态③盐酸酸性比氢硫酸强④HCl比H2S稳定⑤H2S能被Cl2氧化成硫⑥HClO4酸性比H2SO4强⑦氯气与氢气化合比硫与氢气化合要容易进行⑧Cl2与Fe反应生成FeCl3,S与Fe反应生成FeS

A.①②③④⑤⑥⑦⑧

B.①④⑤⑥⑦

C.④⑤⑥⑦⑧

D.③④⑤⑦⑧

答案

答案:C

题目分析:①和③不正确,应该通过最高价氧化物的水化物的酸性强弱比较。非金属性强弱和物质的状态没有关系,②不正确,其余都是正确的,答案选C。

点评:非金属性强弱比较的一般规律是:①由元素原子的氧化性判断:一般情况下,氧化性越强,对应非金属性越强。②由单质和酸或者和水的反应程度判断:反应越剧烈,非金属性越强。③由对应氢化物的稳定性判断:氢化物越稳定,非金属性越强。④由和氢气化合的难易程度判断:化合越容易,非金属性越强。⑤由最高价氧化物对应水化物的酸性来判断:酸性越强,非金属越强。(除氟元素之外)。⑥由对应阴离子的还原性判断:还原性越强,对应非金属性越弱。⑦由置换反应判断:强置弱。〔若依据置换反应来说明元素的非金属性强弱,则非金属单质应做氧化剂,非金属单质做还原剂的置换反应不能作为比较非金属性强弱的依据〕。⑧按元素周期律,同周期元素由左到右,随核电荷数的增加,非金属性增强;同主族元素由上到下,随核电荷数的增加,非金属性减弱。⑨非金属单质与具有可变价金属的反应。能生成高价金属化合物的,其非金属性强。

阅读理解

阅读理解。

                                                                    ADS

                                                                                              August 14, 2002

     ■ The biggest shopping center KRF will open on August 18. Everyone with Today's newspaper will get

a small gift. You are welcome. Address: No. 6 Bridge Street

     ■ English Newspaper, is looking for good English speakers as editors. He should study news in college.

He will get $8,000 a year. Please send you application form (求职表) in 10 days.

     Tel: 3898766

     Address: No 5 Longway Street 

     Email: englishnewspaper@yahoo.com

     ■Traditional Chinese doctor treatment. RMB 200/hourI'll go to your home.

     Mobile: 137629390

     ■New York VS Chinese Dragon Team

     Time: 7 PM Sunday, August 17

     Place: Star Stadium

     Price: RMB 300, RMB 280, RMB 180, RMB 80,

1. If anyone has the newspaper of today, he will get a gift _______.

A. on August 18

B. on August 19

C. on August 17

D. on August 20

2. Bob comes from UK and studies news. He wants to work for the English newspaper.

    He should send his application form before _______.

A. August 23

B. August 24

C. August 25

D. August 26

3. Where and when will the soccer match be?

A. In New York on Sunday

B. In Star stadium at 7:00 AM

C. In Star Stadium on August 17

D. In New York on Saturday

4. If a person wants three cheapest tickets to watch the match, he will pay RMB _______ Yuan.

A. 160

B. 80

C. 240

D. 350

5. Which of the following is right? (下面哪个选项是正确的)

A. The shopping center is at No.6 Longway Street.

B. The telephone number of Chinese doctor is 137629390.

C. You can buy a soccer ticket by calling 3456754.

D. You can find the information about the football ticket on www. Sports.com.

单项选择题 A1/A2型题