The π sophisticated then breaks right down to provide the bromonium ion. A suitable treatment method from the orbitals would hence not strictly be of your alkene and Br2, but with the orbitals inside the π sophisticated itself. The predominance of allylic substitution more than other positions is based on https://bromazolamliquidsolution58147.onesmablog.com/the-solution-de-bromoforme-diaries-78582916