下列关于卤素单质的叙述,正确的是 A.单质的颜色随核电荷数的增

下列关于卤素单质的叙述,正确的是

A.单质的颜色随核电荷数的增加逐渐变浅

B.随核电荷数的增加单质的氧化性逐渐减弱

C.随核电荷数的增加气态氢化物的稳定性逐渐增强

D.单质的熔沸点随核电荷数的增加逐渐降低

答案

B

相关题目

—Who        to clean the classroom yesterday?    —Li Ming.    
—Who        to clean the classroom yesterday?    —Li Ming.     A. helps    B. helped    C. is helping    D. will help
(2014•菏泽)绦虫和蛔虫均为肠道寄生虫;蝗虫对禾本科作
(2014•菏泽)绦虫和蛔虫均为肠道寄生虫;蝗虫对禾本科作物危害很大;青蛙被称为田园卫士.绦虫、蛔虫、蝗虫、青蛙它们分别属于( ) A.腔肠
下列各物质中,属于可再生能源的是               
下列各物质中,属于可再生能源的是                (      )A.石油         B.煤           C.乙醇         D.天然气 
下列说法正确的是 A.纸层析法分离Fe2+和Cu2+实验中滤纸作为
下列说法正确的是 A.纸层析法分离Fe2+和Cu2+实验中滤纸作为惰性支持物,滤纸上吸附的水作为流动相 B.硫酸亚铁铵晶体过滤后用无水乙醇洗涤,阿司
下列结构中,属于器官的是(  )A.汗腺B.血液C.弹性纤
下列结构中,属于器官的是(  )A.汗腺B.血液C.弹性纤维D.胃
They told me it would be cheap but        it cost me nearly $ 500. A.in
They told me it would be cheap but        it cost me nearly $ 500. A.in a word        B.at last         C.in fact        D.as a result
.Published in 1974,the book was a(n) _____ success and was soon translated into
.Published in 1974,the book was a(n) _____ success and was soon translated into thirteen foreign lanuages. A.constant        B.instant       C.confident    D.innocent
 People _______ pale skin and blond hair look good _______ yellow and pink.. A
 People _______ pale skin and blond hair look good _______ yellow and pink.. A.have, in        B.with, on                       C.have, on