Choose the INCORRECT statement.
◦ Axial H atoms are directed above and below the cyclohexane ring.
◦ A substitution reaction typically involves a functional group replacing a hydrogen atom on a chain or ring containing molecule.
◦ A free radical is a compound with an unpaired electron.
◦ LPG is linear polymerized gas.
◦ Unsaturated usually means a double, triple or delocalized electron system is present in the molecule.