Incorrect statement among the following

For example, Ethylene cation polymerization is a type of cationic polymerization that involves the use of a Lewis acid catalyst, such as aluminum chloride (AlCl₃), to initiate the reaction. The general mechanism for ethylene cation polymerization can be described as follows:

• Initiation: The Lewis acid catalyst, AlCl₃, reacts with ethylene to form a carbocationic species:

                AlCl₃ + C₂H₄ → ${\mathrm{AlCl}}_2^{+}$ + ${\mathrm{CH}}_3-{\mathrm{CH}}_2^{+}{\mathrm{Cl}}^{-}$

• Propagation: The carbocationic species reacts with another ethylene molecule to form a new carbocationic species and a growing polymer chain:

                ${\mathrm{CH}}_3-{\mathrm{CH}}_2^{+}$ + C₂H₄ → ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2^{+}$ + H₂C=CH₂

The process repeats, adding more ethylene monomers to the growing polymer chain.

• Termination: The polymerization reaction stops when all of the monomer is consumed. Termination occurs when the carbocationic species reacts with a counterion, such as the chloride ion (Cl^-), to form a neutral molecule:

                ${\mathrm{CH}}_3-{\mathrm{CH}}_2^{+}$ + Cl^- → CH₃CH₂Cl