Question

Why phenyl carbocation and vinyl carbocation are highly unstable?

Answer 1

because in these carbocationsof have high bond energy of the aromatic C-H bond. The C-H bonds of benzene are sp2 hybridized. The high s character means that the electrons are closer to the nucleus, so we must add more energy to remove these electrons and break the bond.

Answer 2

Answer:

because in these carbocationsof have high bond energy of the aromatic C-H bond. The C-H bonds of benzene are sp2 hybridized. The high s character means that the electrons are closer to the nucleus, so we must add more energy to remove these electrons and break the bond.

Explanation: