As a summary of the section, the first attempt to connect the entropy of phase transition with the symmetry of atomic/molecular orbitals is successful. Compared with the mass distribution theorem, this method is operable with rational results. For example, the symmetry of inert gas atoms gives the operation number n = 1 in the theoretical frame of the geometric symmetry of atomic mass distribution. Meanwhile, for an asymmetric molecule CHXYZ where X, Y, and Z are different atoms, the operation number is also n = 1. Hence, it is not distinguishable in the symmetry. However, based on the shape and size of molecular orbitals, the symmetries of the above two molecules are distinguishable with different rational A values.