题目内容

下列化合物极性由大到小顺序正确的是（）。①CH3CH3 ②CH3CH2F ③CH3CH2Cl ④CH3CH2Br ⑤CH3CH2I

A. ⑤＞④＞③＞②＞①
B. ①＞②＞③＞④＞⑤
C. ②＞③＞④＞⑤＞①
D. ①＞⑤＞④＞③＞②

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