卤化氢HCl(I),HBr(II),HI(III)与烯烃加成时,其活性顺序为()

卤化氢HCl(I),HBr(II),HI(III)与烯烃加成时,其活性顺序为()

A.I>II>III

B.III>II>I

C.II>I>III

D.II>III>I

正确答案:A

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