CH3CH2CH2CH2+(I) CH3CH+CH2CH3(II) (CH3)3C+(Ⅲ)三种碳正离子稳定性顺序如何?
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CH3CH2CH2CH2+(I),CH3CH+CH2CH3(II),(CH3)3C+(Ⅲ)三种碳正离子稳定性顺序如何?
A.I>II>III
B.III>II>I
C.II>I>III
D.II>III>I

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CH 3 CH (CH 3 ) 2
