In the search of coexisting system of conductivity and magnetism possessing novel electrical and spin properties, we attempted to investigate the electron transport properties of Blatter's radical coupled with nitroxy (NO) radicals to furnish suitable di-and tri-radical candidates with high-spin ground states. To begin with, we first investigated BD connection of the radical with Au electrodes which yielded us with the prominent Fano resonance features for Blatter's mono-radical. Stable high-spin organic radicals (S ≥ 1) are attractive targets to be potentially used as organic magnets and spin-filters. The main objective in the molecular design of high-spin di-and tri-radicals is to obtain strong ferromagnetic exchange interactions between S = 1/2 centers. To nourish ferromagnetic exchange interactions in a diradical (DR) with triplet ground state, Bl-NO DR (BD) (shown in Figure ) is designed by attaching NO radical at the meta position of the ring C. Corroborating with the spin alternation rule, the traditional broken-symmetry (BS-DFT) method at UB3LYP/def2-TZVP level provided us with a triplet ground state with a singlet-triplet energy gap of 438.4 cm -1 . Noteworthy, a similar diradical with triplet ground state was also designed in our previous work. Following the similar molecular topology, a triradical (TR), Bl-NO-NO T R (BD) (shown in Figure ) is obtained by appending the NO radical moieties at the 1,3-positions of the ring C. Within the broken-symmetry (BS-DFT) framework exempted from the spin contamination errors, Bl-NO-NO T R yields a quartet ground state with two doublet-quartet energy gaps of 966.8 cm -1 and 201.8 cm -1 . The detailed criteria to extract doublet-quartet energy gap in a triradical within the broken-symmetry (BS-DFT) framework exempted from the spin contamination errors is discussed in our recent work. In the view of above, electron transport calculations were performed in the respective triplet and quartet ground states of di-and triradical systems with BD connection to gold electrodes. The spin-resolved T (E) is plotted in Figure . Surprisingly, an insignificant difference in transmission spectra is observed on moving from mono-to di-and triradicals.