Question

निम्नलिखित में से ब्यूटेन के सही संरचनात्मक समावयवी कौन-से हैं?

1. \[\begin{array}{cc}
   \ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\
   |\phantom{....}|\phantom{....}|\phantom{....}|\\
   \ce{H - C - C - C - C - H}\\
   |\phantom{....}|\phantom{....}|\phantom{....}|\\
   \ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\
   \end{array}\]
   
   
2. \[\begin{array}{cc}
   \ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\
   |\phantom{....}|\phantom{....}|\\
   \ce{H - C - C - C - H}\\
   |\phantom{.....}|\phantom{.....}|\\
   \ce{H}\ce{H-C-H}\ce{H}\\
   |\\
   \ce{H}\\
   \end{array}\]
3. \[\begin{array}{cc}
   \ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\
   |\phantom{....}|\phantom{....}|\\
   \ce{H - C - C - C - H}\\
   |\phantom{.....}\backslash\phantom{..}|\\
   \phantom{....}\ce{H}\phantom{......}\ce{C - H}\phantom{}\\
   \phantom{.......}|\\
   \phantom{.......}\ce{H}\\
   \end{array}\]
4. \[\begin{array}{cc}
   \ce{H}\phantom{...}\ce{H}\\
   |\phantom{....}|\\
   \ce{H - C - C - H}\\
   |\phantom{....}|\\
   \ce{H - C - C - H}\\
   |\phantom{....}|\\
   \ce{H}\phantom{...}\ce{H}\\
   \end{array}\]

Options

• (i) तथा (iii)

• (ii) तथा (iv)

• (i) तथा (ii)

• (iii) तथा (iv)

Answer 1

\[\begin{array}{cc}
\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\
|\phantom{....}|\phantom{....}|\phantom{....}|\\
\ce{H - C - C - C - C - H}\\
|\phantom{....}|\phantom{....}|\phantom{....}|\\
\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\
\end{array}\]    तथा   \[\begin{array}{cc}
\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\
|\phantom{....}|\phantom{....}|\\
\ce{H - C - C - C - H}\\
|\phantom{.....}|\phantom{.....}|\\
\ce{H}\ce{H-C-H}\ce{H}\\
|\\
\ce{H}\\
\end{array}\]

स्पष्टीकरण - 

हम देखते हैं कि यौगिक (i) और यौगिक (ii) का एक ही सूत्र C₄H₁₀ है। ऐसे यौगिक जिनके अणु सूत्र समान हों लेकिन संरचना भिन्न हो, संरचनात्मक समावयव कहलाते हैं।