Computing Some Eccentricity-Based Topological Indices of Para-Line Graphs of Hexagonal Cactus Chains

Abstract

Let (Formula preŞented.) be a simple molecular graph without directed and multiple edges and without loops. Graph theory has become an important component of the chemical mathematics, and it has become one of the most powerful mathematical tools in the analysis and study of the architecture of a chemical network. It studies of descriptors in quantitative structure-property relationship (QSPR) and quantitative structure-activity relationship (QSAR) studies in the chemistry science. There are a lot of topological indices in QSPR/QSAR studies. In this paper, some eccentricity-based topological indices namely the eccentric connectivity index (Formula preŞented.) the modified eccentric connectivity index (Formula preŞented.) the total eccentricity index (Formula preŞented.) the second Zagreb eccentricity index (Formula preŞented.) and the average eccentricity index (Formula preŞented.) are computed for the para-line graphs of some hexagonal cactus chains namely the para-chain (Formula preŞented.) the ortho-chain (Formula preŞented.) and the meta-chain (Formula preŞented.). © 2021 Taylor & Francis Group, LLC.