Abstract
The crystallographic data of elements existing at room temperature or above have been reviewed on different basis i.e., the crystal system (crystal symmetry), axial ratio and packing efficiency to know the general nature of distribution of elements based on symmetry. In order to know which of the polymorphic elements will likely to behave as polytypic, the cohesive energies of all the polymorphs have been calculated using 6-12 potential energy equation. The energy difference between the polymorphic forms has been measured in each case to explore the possible reason/condition for a polymorphic element to exhibit polytypism. On that basis it is proposed that cobalt and thorium should also exhibit polytypism.