C7H16的同分异构体有9种.分别是
1、庚烷:CH3CH2CH2CH2CH2CH2CH3
2、2-甲基已烷:CH3CHCH2CH2CH2CH3
CH3
3、3-甲基已烷:CH3CH2CHCH2CH2CH3
CH3
4、2,2-二甲基戊烷： CH3
CH3CCH2CH2CH3
CH3
5、3,3-二甲基戊烷： CH3
CH3CH2CCH2CH3
CH3
6、2,3-二甲基戊烷：CH3CHCHCH2CH3
CH3CH3
7、2,4-二甲基戊烷：CH3CHCH2CHCH3
CH3 CH3
8、3-乙基戊烷：CH3CH2CHCH2CH3
CH2
CH3
9、2,2,3-三甲基丁烷： CH3CH3
CH3 CCHCH3
CH3