The electrons in the delocalized molecular orbitals of benzene (C6H6)
a) are confined between two adjacent bonding atoms.
b) are free to move around the six-membered ring.
c) form the electron pairs in the C-H bonds of the compound.
d) are unevenly distributed through the molecule.
e) are responsible for the fact that the bonds between three pairs of carbon atoms in the ring are longer and stronger than the bonds between the other three pairs of carbon atoms.