某相对分子质量为84的烃,主链上有4个碳原子的同分异构体有(    )

某相对分子质量为84的烃,主链上有4个碳原子的同分异构体有(    )

A.3种                   B.4种                    C.5种                D.6种

答案

B


解析:

由84÷14=6,知该烃分子式为C6H12,因有主链则为烯烃,且主链上只有4个碳原子,故有四种同分异构体:

 

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