The termination step of the reaction is the removal of radicals from the reaction
mixture by the collision of two lone pair species. If the Two radicals involved in the
elimination are both derivitives of the original species then the elimination is known
as CHAIN TERMINATION. There is however another form of elimination that occurs during
the reaction and is known as an inhibition step. The inhibition step also removes
radicals from the reaction but does so with forgien radicals or by reaction with the
vessel walls. All forms of termination are very rare as the concentrations of radicals
needed for the reaction to occur are so small. However, they can not be neglected as are a
fundamental part of the chemistry.

The possible termination steps for the reaction between methane and chlorine are
listed below: