Em tham khảo nha:

\(\begin{array}{l}
C{H_4}:H - C{H_2} - H\\
{C_2}{H_6}:C{H_3} - C{H_3}\\
{C_3}{H_8}:C{H_3} - C{H_2} - C{H_3}\\
{C_4}{H_{10}}:\\
C{H_3} - C{H_2} - C{H_2} - C{H_3}\\
C{H_3} - CH(C{H_3}) - C{H_3}\\
{C_5}{H_{12}}:\\
C{H_3} - C{H_2} - C{H_2} - C{H_2} - C{H_3}\\
C{H_3} - CH(C{H_3}) - C{H_2} - C{H_3}\\
C{H_3} - C{(C{H_3})_2} - C{H_3}\\
{C_2}{H_5}Cl:C{H_3} - C{H_2}Cl\\
C{H_4}O:C{H_3} - OH\\
C{H_3}Br:H - C{H_2} - Br\\
{C_2}{H_4}:C{H_2} = C{H_2}\\
{C_2}{H_2}:CH \equiv CH\\
{C_3}{H_6}:C{H_2} = CH - C{H_3}\\
{C_4}{H_8}:\\
C{H_2} = CH - C{H_2} - C{H_3}\\
C{H_2} = C(C{H_3}) - C{H_3}\\
C{H_3} - CH = CH - C{H_3}\\
{C_2}{H_4}B{r_2}:C{H_2}Br - C{H_2}Br\\
{C_2}{H_2}B{r_2}:CHBr = CHBr\\
{C_2}{H_5}Br:C{H_3} - C{H_2}Br\\
C{H_3}Cl:Cl - C{H_2} - H
\end{array}\)

Đáp án:

ch4:H%E2%88%92CH2%E2%88%92HC2H6:CH3%E2%88%92CH3C3H8:CH3%E2%88%92CH2%E2%88%92CH3C4H10:CH3%E2%88%92CH2%E2%88%92CH2%E2%88%92CH3CH3%E2%88%92CH(CH3)%E2%88%92CH3C5H12:CH3%E2%88%92CH2%E2%88%92CH2%E2%88%92CH2%E2%88%92CH3CH3%E2%88%92CH(CH3)%E2%88%92CH2%E2%88%92CH3CH3%E2%88%92C(CH3)2%E2%88%92CH3C2H5Cl:CH3%E2%88%92CH2ClCH4O:CH3%E2%88%92OHCH3Br:H%E2%88%92CH2%E2%88%92BrC2H4:CH2=CH2C2H2:CH%E2%89%A1CHC3H6:CH2=CH%E2%88%92CH3C4H8:CH2=CH%E2%88%92CH2%E2%88%92CH3CH2=C(CH3)%E2%88%92CH3CH3%E2%88%92CH=CH%E2%88%92CH3C2H4Br2:CH2Br%E2%88%92CH2BrC2H2Br2:CHBr=CHBrC2H5Br:CH3%E2%88%92CH2BrCH3Cl:Cl%E2%88%92CH2%E2%88%92H

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