  In chemical graph theory, a topological index is a numerical representation
of a chemical network while a topological descriptor correlates certain
physico-chemical characteristics of underlying chemical compounds besides its
chemical representation. Graph plays an vital role in modeling and designing
any chemical network. F. Simonraj et al. derived new third type of Hex derived
networks [27]. In our work, we discuss the third type of hex derived networks
HDN3(r), THDN3(r) and RHDN3(r) and computed exact results for topological
indices which are based on degrees of end vertices.
