C5H11應該是戊基,它有七種同分異構體,分別是CH3CH2CH2CH2CH2-,CH3CH2CH2CH(CH3)-CH3CH2CH(CH3)CH2-CH3CH(CH3)CH2CH2-CH3CH2C(CH3)2-,CH3C(CH3)2CH2...
⑥(CH3)2C(F)CH2CH3,2-甲基-2-氟丁烷...