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

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1. $\text{Propan: }CH_3-CH_2-CH_3$

   $\text{2- metylpentan: }CH_3-(CH-CH_3)-CH_2-CH_2-CH_3$

   $\text{2,3 – đimetylbutan: }CH_3-(CH-CH_3)-CH_2-CH_2-CH_3$

   $\text{3-etyl-2-metylpentan: }CH_3-(CH-CH_3)-(CH-CH_3)-CH_3$

   $\text{Butan: }CH_3-CH_2-CH_2-CH_3$

   $\text{3-metylpentan: }CH_3-CH_2-(CH-CH_3)-CH_2-CH_3$

   $\text{Isobutan: }CH_3-(CH-CH_3)-CH_3$

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

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