International Journal of Chemistry and Materials Research 2312-0991 2311-763X International Journal of Chemistry and Materials Research Randic Index and Edge Eccentric Connectivity Index of Certain Special Molecular Graphs International Journal of Chemistry and Materials Research International Journal of Chemistry and Materials Research 08-2014 2014 08-2014 08-2014 2 8 81 87 30 Nov 30 Nov In this paper, we determine the Randic index and edge eccentric connectivity index of fan molecular graph, wheel molecular graph, gear fan molecular graph, gear wheel molecular graph, and their r-corona molecular graphs.