Giải bài 1 trang 123 SGK Hóa học 11

$\begin{align} & a)\,pentan :\,C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}} \\ & b)\,2-metylbutan :\,C{{H}_{3}}-C\underset{\left| {} \right.}{\mathop{H}}\,-C{{H}_{2}}-C{{H}_{3}}\,(\,còn \, gọi \, là\,\text{is}opentan ) \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3}} \\ & c)\text{is}obutan :\,C{{H}_{3}}-C\underset{\left| {} \right.}{\mathop{H}}\,-C{{H}_{3}}\,(\,còn \, gọi \, là\,2-metylpropan) \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3}} \\ \end{align}$