問題詳情

21. Which of the following pairs of structures are not resonance forms of the same compounds?
(A)   
(B)  
(C)  
(D)   
(E) 

參考答案

答案:D
難度:非常簡單0.941176
統計:A(0),B(0),C(0),D(16),E(1)

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