Viết công thức cấu tạo của ankan Propan ; 2- metylpentan; Isohexan ; 2,3 - đimetylbutan; 3-etyl-2-metylpentan; Butan ; 3-metylpentan; Isobutan Mk cần gấp giúp vs

$$\begin{array}{|c|c|}
\hline
\text{Tên gọi}&\text{Công thức cấu tạo}\\
\hline
\text{Propan}&CH_3 - CH_2 - CH_3\\
\hline
\text{2-metylpentan}&CH_3-CH-CH_2-CH_2-CH_3\\
&\mathop{C}\limits^{\Big|}H_3\qquad\qquad\qquad\\
\hline
\text{2,3-đimetylbutan}&CH_3-CH-CH_-CH_3\\
&\quad \mathop{C}\limits^{\Big|}H_3\ \mathop{C}\limits^{\Big|}H_3\\
\hline
\text{3-etyl-2-metylpentan}&CH_3-CH-CH-CH_2-CH_3\\
&\mathop{C}\limits^{\Big|}H_3\ \ \mathop{C}\limits^{\Big|}H_2\qquad\quad\\
&\mathop{C}\limits^{\Big|}H_3\ \\
\hline
\text{Butan}&CH_3 - CH_2 - CH_2 - CH_3\\
\hline
\text{3-metylpentan}&CH_3-CH_2-CH-CH_2-CH_3\\
&\mathop{C}\limits^{\Big|}H_3 \\
\hline
\text{Isobutan}&CH_3-CH-CH_3\\
&\mathop{C}\limits^{\Big|}H_3 \\
\hline
\end{array}$$