What is the major difference between an antiaromatic and aromatic compound?
a. The structure must be cyclic for aromatic but not antiaromatic compounds.
b. Antiaromatic compounds have at lease one sp3 hybridized atom in the ring
c. Antiaromatic compound can assume a chair-like structure while aromatic compound are nearly flat
d. Aromatic compounds cannot have a charged atom in the structure
e. Only aromatic compounds follow Huckle's rule