👉 Halogenation is a process that combines a halogen (a type of element) with an organic compound to form a new compound. Halogens are elements that have -10, +1, +7 or +5 valence electrons in their valence shell. The halogen atoms can be combined with a hydrocarbon (a molecule made up of two or more different types of atoms) to give rise to a compound called a halogenated hydrocarbon. In the example of halogens