Em tham khảo nha:
\(\begin{array}{l}
{C_3}{H_8}:C{H_3} - C{H_2} - C{H_3}:propan\\
{C_4}{H_8}:\\
C{H_2} = CH - C{H_2} - C{H_3}:but - 1 - en\\
C{H_2} = C(C{H_3}) - C{H_3}:2 - metyl\,propen\\
C{H_3} - CH = CH - C{H_3}:but - 2 - en\\
{C_5}{H_{10}}:\\
C{H_2} = CH - C{H_2} - C{H_2} - C{H_3}:pent - 1 - en\\
C{H_2} = C(C{H_3}) - C{H_2} - C{H_3}:2 - metyl\,but - 1 - en\\
C{H_2} = CH - CH(C{H_3}) - C{H_3}:3 - metyl\,but - 1 - en\\
C{H_3} - CH = CH - C{H_2} - C{H_3}:pent - 2 - en\\
C{H_3} - CH(C{H_3}) = CH - C{H_3}:2 - metyl\,but - 2 - en
\end{array}\)