Abstract
Topological index plays an important role in the derivation of structural characteristics of compounds, drug discovery and organic synthetic chemistry. In this paper, we study the Sombor indices of some chemical graphs such as polyamidoamine, phthalocyanine, graphene, coronoid systems, carbon nanocones and four random chains. The correlation coefficient and linear regression analysis of the Sombor indices with some physicochemical properties of benzenoid hydrocarbons are discussed, and we find that the enthalpy of vaporization, flash point and molar refractivity are strongly correlated with the Sombor indices.
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