A) \[{{C}_{6}}{{H}_{5}}CH_{2}^{+}\]
B) \[{{(C{{H}_{3}})}_{3}}-{{C}^{+}}\]
C) \[{{(C{{H}_{3}})}_{2}}C{{H}^{+}}\]
D) \[C{{H}_{3}}CH_{2}^{+}\]
Correct Answer: A
Solution :
Order of stability of carbocation. \[{{({{C}_{6}}{{H}_{5}})}_{3}}{{C}^{+}}>{{({{C}_{6}}{{H}_{5}})}_{2}}C{{H}^{\oplus }}>{{C}_{6}}{{H}_{5}}\overset{\oplus }{\mathop{C}}\,{{H}_{2}}\] \[>\overset{+}{\mathop{C}}\,{{H}_{2}}-CH=C{{H}_{2}}>{{(C{{H}_{3}})}_{3}}\overset{+}{\mathop{C}}\,>{{(C{{H}_{3}})}_{2}}\overset{+}{\mathop{C}}\,H\] \[>C{{H}_{3}}\overset{+}{\mathop{C}}\,{{H}_{2}}>\overset{+}{\mathop{C}}\,{{H}_{3}}\]
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