$(i)$ $\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\
{C{H_3} - {C^ \mathbf{-} }} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}}
\end{array}$
$(ii)\;\;CH_2 = CH -\stackrel{\mathbf{-}}{C}H_2$
$(iii)\;\;CH \equiv \stackrel{\mathbf{-}}{C}$
$(iv)\;\;\stackrel{\mathbf{-}}{C}H_3$
$(v)\;\;\stackrel{\mathbf{-}}{C}N$
\((v)\) In figure \(5 , sp\) hybridised carbon is more electronegative. -ve charge on more electronegative atom makes it more stable. [ref. image]
Also, there is \(-I\) effect.
\(\therefore\) It is most stable.
\((iii)\) \(H - C \equiv \overline{ C }\)
sp hybridized carbon carry -ve charge.
\(\therefore\) Hence, it is also more stable
\((ii)\) In figure \(2\), resonance is taking place. [ref. image]
\(\therefore\) It is more stable.
\((iv)\) \(\overline{ C } H _3\)
-ve charge is carried by \(sp ^3\) hybridised carbon.
\(\therefore\) It is less stable.
\((i)\) In figure \(1\) , the central \(C\) is surrounded by \(CH _3\) and hence it shows \(+ I\) effect from \(3\) sides. [ref. image]
\(\therefore\) Hence, it is least stable.
\(\therefore \text { (v) }\,<\,\text { (iii) }\,<\,\text { (ii) }\,<\,\text { (iv) }\,<\,\text { (i) }\)
નીચે આપેલમાંથી કઈ ગોઠવણી ઉપરોક્ત સંસ્પંદન ફાળો આપનારાઓની સ્થિરતામાં ઘટાડો કરવાનો યોગ્ય ક્રમ આપે છે?
$(i)$ $\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}-CH_2} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,|}
\end{array}} \\
{C{H_3} - {C^ + }} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}}
\end{array}$
$(ii)$ $\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,|}
\end{array}} \\
{C{H_3} - {C^ + }} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{H}}
\end{array}$
$(iii)$ $\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,|}
\end{array}} \\
{C{H_3} - {C^ + }} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}}
\end{array}$
$(iv)$ $Ph - CH ^{+}-\underline{ CH }_{3}$