In the same temperature range, processes in which the coordination number of the diffusing atom is reduced become available on Mg(0001), such as in the 120° corner and kink breaking processes. Above 200 K, the dimer and trimer separation processes, edge evaporation, and 60° corner separation are also enabled, as well as the step-up process. Despite that, the statement still applies that bond breakages are extremely unlikely for magnesium and that the increase of the coordination number always proceeds preferentially. For example, kink evaporation and the formation of a step-vacancy are not possible at room temperature for Mg(0001). Nevertheless, activated evaporation and separation processes are necessary for island ripening (redistribution of mass). We assume many small islands form in the lowtemperature range, and new adsorbates join existing ones. At higher temperatures, island ripening should begin, and smaller islands dissolve at the expense of larger islands.