Question

The most stable carbonium ion among the following is

• A. $ {{C}_{6}}{{H}_{5}}\overset{+}{{C}}\,H{{C}_{6}}{{H}_{5}} $
• B. $ {{C}_{6}}{{H}_{5}}\overset{+}{{C}}\,{{H}_{2}} $
• C. $ C{{H}_{3}}\overset{+}{{C}}\,{{H}_{2}} $
• D. $ {{C}_{6}}{{H}_{5}}C{{H}_{2}}\overset{+}{{C}}\,{{H}_{2}} $

Answer 1

Answer: (A)

$ {{C}_{6}}{{H}_{5}}\overset{+}{{C}}H{{C}_{6}}{{H}_{5}} $
is most stable since the positive charge can be delocalised over both the phenyl rings.