JEE Main & Advanced Chemistry GOC Question Bank Dipole moment, Resonance and reaction intermediates

  • question_answer Which of the following free radicals is most stable [NCERT 1982]

    A) Primary

    B) Methyl

    C) Secondary

    D) Tertiary

    Correct Answer: D

    Solution :

               \[\underset{\begin{smallmatrix}   \\  {{3}^{o}} \end{smallmatrix}}{\mathop{C{{H}_{3}}}}\,-\underset{C{{H}_{3}}}{\overset{C{{H}_{3}}\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,}{\overset{|\,\,\,\,\,\,\,\,\,}{\mathop{{{C}^{o}}\,\,>\,}}}\,}}}\,\underset{\,\,\,\,\,\,\,{{2}^{o}}}{\mathop{C{{H}_{3}}-\overset{C{{H}_{3}}\,}{\mathop{\overset{|\,\,\,\,\,\,\,\,\,}{\mathop{\underset{o\,\,\,\,\,\,\,\,}{\mathop{CH\,\,}}\,}}\,}}\,}}\,>\underset{\begin{matrix}    {}  \\    {{1}^{o}}  \\ \end{matrix}}{\mathop{C{{H}_{3}}-\overset{o\,\,\,\,\,\,}{\mathop{C{{H}_{2}}}}\,}}\,\] Greater the no. of alkyl groups attached to the carbon atom carrying the odd electrons, greater is the delocalization of odd electron and hence more stable is the free radical.

adversite


You need to login to perform this action.
You will be redirected in 3 sec spinner