To understand this, we investigated the energetic location and spatial distribution of frontier central-subsystem molecular orbitals which represent the orbitals through which the electrons can tunnel. Figure for Bl-NO DR (BD) diradical, shows that the spatial distribution of two singly occupied molecular orbitals (SOMOs) for spin-up is almost identical to the two singly unoccupied molecular orbitals (SUMOs) for spin-down. Similarly, HOMO for spin-up is similar to HOMO for spin-down. This means that the molecular orbitals for spin-down are shifted up in energy by two levels as compared to spin-up. Thus, evidently revealing the existence of two discrete SOMOs and SUMOs lying near Fermi level for Bl-NO DR (BD) diradical, as one would naively expect for a conventional diradical. On the similar grounds, Figure for Bl-NO-NO T R (BD) tri-radical, shows that molecular orbitals for spindown are ahead of spin-up by three levels. Thus, indicating the presence of three discrete SOMOs and SUMOs in the vicinity of Fermi energy, albeit two of them are near-degenerate in energy. With the existence of two/three SOMOs and SUMOs in a di-/triradical system, one would expect the appearance of either two/three close-lying transmission channels or a single transmission channel with an increased broadening and hence a rise in conductance. In a recent study Rajca et al. also demonstrated that the near degenerate pairs of singly occupied and singly unoccupied orbitals in a diradical couple to form a single occupied and a single unoccupied band which act as a conductive π channel and lead to an increased conductivity. Counter-intuitively, our transmission spectra (Figure ) shows an insignificant change with an increase in number of SOMOs/SUMOs. Apart from the ordinary presence of two/three SOMOs and SUMOs in a di-/triradical system, we observe further intricacies as discussed. For Bl-NO DR (BD) diradical, the two α-SOMOs/β-SUMOs lying close to the Fermi level features a localized character. The α-SOMO1/β-SUMO1 are localized on the ring A and ring B of Blatter's radical and can interact with the one of the electrode atoms efficiently. Apart from this, being localized on the fragments of molecular backbone, α-SOMO1/β-SUMO1 are also well coupled to the α-HOMO/β-LUMO which forms the main channel for electron transport. Thus, α-SOMO1/β-SUMO1 plays a significant role in mediating the electron transport. However, the α-SOMO2/β-SUMO2 being localized on the NO radical moiety and extending upto the ring C only are completely decoupled from α-HOMO/β-LUMO as well as both the electrodes. Thus, indicating the negligible participation of α-SOMO2/β-SUMO2 in mediating the electron transport. Similarly, for Bl-NO-NO T R (BD) triradical, the α-SOMO2/β-SUMO2 and α-SOMO3/β-SUMO3 are localized on NO radical and do not take part in electron transport. Thus, although the increasing number of spin centers embarks the presence of increasing number of α-SOMOs/β-SUMOs, however only one α-SOMO/β-SUMO takes part in electron transport, whereas the other remains decoupled from dominant electron transport pathways. With these observations, we argue that increasing the number of magnetic centers will not necessarily yield an increased conductance or increased spin filtering as compared to mono-radicals. Nonetheless, the electrical conductance of a di-or tri-radical can be effectively tuned by intentionally controlling the degree of localization of increasing number of SOMOs/SUMOs lying near the vicinity of Fermi energy. The delocalized half-filled orbitals can give rise to strongly coupled exchange and transport pathways, which can further promote higher conductance and spin polarized transmission. To further explore the potential for enhanced conductance by di-and tri-radicals, we investigated the other connection mode BC of Blatter's radical to electrodes. Noteworthy, the mono-radical Bl M R (BC) yielded us with Briet-Wigner resonances leading to much stronger enhancement in conductance as compared to its non-radical counterpart. Following the similar strategy, a di-and tri-radical with high spin and quartet ground state, respectively was designed with BC connection to gold electrodes (as shown in Figure ).