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    20．请你判断己烷有 种同分异构体.并试写出这些同分异构体的结构简式和键线式: (1)结构简式: . (2)键线式: . 【查看更多】

     

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    请你判断己烷有      种同分异构体，并试写出这些同分异构体的结构简式和键线式：

    （1）结构简式：

                                                                 

                                                                                        

                                                                

                                                                                 

                                                             。

    （2）键线式：                                                            

                                                                                        

                                                               

                                                                               

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