MCQ
Which is the most stable carbocation
- Aiso-propyl
- ✓Triphenylmethyl cation
- CEthyl cation
- D$\pi $-propyl cation
tertiary alkyl $>$ secondary alkyl $>$ primary alkyl $>$ methyl.
More the number of alkyl groups, the greater the dispersal of positive charge and therefore, more the stability of carbonium ion is observed.
Dispersal of positive charge increases with the increase in the number of benzene ring.
triphenylmethyl cation
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$\begin{array}{*{20}{c}}
{C{H_2} - CH - C{H_2}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,} \\
{OH\,\,\,\,\,\,\,\,OH\,\,\,\,\,\,OH}
\end{array}$
is :
$I.$ ${C_2}{H_4}$ $II.$ ${C_2}{H_2}$
$III.$ ${C_6}{H_6}$ $IV.$ ${C_2}{H_6}$