Benzene's extraordinary stability is related to

Options

A. the presence of alternate single and double bonds between C atoms
B. the planar hexagonal structure
C. an extented `pi` system in which the `e^(-)` are symetrically delocalized over all six carbon atoms
D. its symmetrical structure

Answer

C

Explanation

The ring (C skeleton) is comprised of six `sp^(2)` hybridized C's each `sigma` bonded to two C's and an H. Each C also has a p atomic orbital with one `e^(-)` the p atomic orbitals project above andbelow the plane of the ring which is a nodal plane rather than forming three localized alternating double bonds (cyclohexatriene) these p atomic orbitals overlap latterally to form an extended `pi` system covering all six C's making the C,s equivalent Delocalization results in less electrons repulsion greater stablization and lower enegy.