$CH _{2} = C = C H - C H _{3}$

$\quad 1\quad \quad 2\quad \quad 3\quad \quad \quad 4$

અણુમાં, કાર્બન $1,2,3$ અને $4$નું સંકરણ અનુક્રમે શોધો.

$\begin{matrix}
   C{{H}_{3}}\,\,\,\,\,\,\,  \\
   |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   {{H}_{3}}C-C-CH=C{{H}_{2}}  \\
   |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   C{{H}_{3}}\,\,\,\,\,\,\,\,\,  \\
\end{matrix}$