A) \[\overset{\oplus }{\mathop{C{{H}_{3}}CHC{{H}_{2}}C{{H}_{3}}}}\,\]
B) \[\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{{{H}_{3}}C-C-\overset{\oplus }{\mathop{C{{H}_{2}}}}\,}}\,}}\,}}\,}}\,\]
C) \[\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{{{H}_{3}}C-C\oplus }}\,}}\,}}\,}}\,\]
D) \[{{H}_{3}}C-C{{H}_{3}}-\overset{\oplus }{\mathop{C{{H}_{2}}}}\,\]
Correct Answer: C
Solution :
More the number of resonating structures more stable the ion. \[\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{{{H}_{3}}C-C\oplus }}\,}}\,}}\,}}\,\]is a tertiary carbonium ion. It is stabilized by hyper conjugation. It has nine a \[C-H\] bonds and has maximum nine resonance structures.
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