The present investigation has been carried out in order to revise the results of the present author’s previous investigation. For this purpose, the new data about the heat of fusion of most metallic elements have been used.
Almost the same results as those of the previous investigation have been obtained. In the present investigation, however, a new fact has been found that the relation in question in metallic elements belonging to CPHex should be considered in two different regions separately, the one being the region of the lower melting temperature and the other the region of the higher melting temperature.
The following predictions have been deduced from the present investigation :
(1) The structures of the liquid phases in equilibrium with the solid metallic elements (except Al) belonging to FCC at their melting temperatures will be the same with each other, independently of the species of metallic element, because the relation between the entropy of fusion or the heat of fusion of these metallic elements and their melting temperature is represented exactly by a straight line or a smooth curve. The same thing will be said about the metallic elements belonging to other types of space lattice.
(2) Though the space lattice of the following metallic elements is considered to be BCC at present, most of them belong probably to FCC
Zr, V, Ti, Mn, Eu.
(3) Though the crystal structure of the following metallic elements is unknown at present, they belong probably to FCC or CPHex
Pa, Ac, U, Sm, Pm, Nd, Pr, La, Ce, Ra.