Muhammad AleemFA22-RMT-023Dr. Muhammad Kamran SiddiquiLHR TP 93362026-03-172024-03-17https://repository.cuilahore.edu.pk/handle/123456789/2902The use of graph theory in many fields of study has increased significantly, especially in the field of chemical graph theory. Many scholars have been able to explore a range of new directions in the last few years. A chemical graph is a named graph in which the atoms of a compound are represented at the vertices, and the edges represent chemical bonds between atoms. Determining various physical and chemical properties of the molecular structures under study requires an examination of topological indices. Firstly, we focused on degree-based topological indices, namely the Randic index, atom bond connectivity in dex, geometric arithmetic index, the first and the second Zagreb indices and co-indices, the first and the second multiple Zagreb indices and co-indices, hyper Zagreb index, for gotten index, augmented Zagreb index, Balaban index, redefined Zagreb type indices, of Palladium Selenide Crystals PdSe2. Further, we gave graphical representations of these in dices. These mathematical frameworks might provide a way to study the thermo dynamical properties of the chemical structure of Palladium Selenide Crystals PdSe2.enDepartment of MathematicsMathematicsFA22chemical graph theoryatoms of a compoundtopological indicesThesis