SAT Subject Test Chemistry,10 edition

where the dashed lines indicate a partial π bond. Each of the six carbon atoms is sp^2 hybridized, and
therefore each has an unhybridized p orbital that is coming out of (and going into) the plane of the
paper. These orbitals interact through π bonding and form the partial π bonds: partial because there
are six electrons total that are part of this “π cloud” (one from each carbon atom) and therefore
there are enough electrons to form only three such bonds that need to be shared among six atoms.