Applications des groupes de permutations en physique

Abstract

This work aims to find the molecular orbital diagram using permutation group theory in physics. First of all, we prove that there is an isomorphism between the two groups s_3 and c_3v. By applying the different elements of group symmetry, we obtain an irreducible representation whose sum is a well-known linear combination which makes it possible to give a representation of the molecules of ammonia and trichlorophosphorus