2) of FBNF is -0.65 eV/atom which confirms the experimental feasibility of flourination. These findings are very consistent with the previous theoretical and experimental results [43] [45] . The nature of chemical bonds are analyzed by Mulliken charge density calculations (Fig. ). The red to pink color codes (Fig. ) indicates the lowest to highest charge density distribution. The considerable overlap of electronic wave functions (Fig. ) with sharing of the electron among B and N atoms in FBNF monolayer reveals the presence of covalent B-N bonding, which agrees with the previous report . A similar configuration is found between F and B atoms (Fig. ) thereby confirms the covalent F-B bonding. On the other hand, there is a small distortion of the overlapped wave function at the center of F and N atoms ( Fig. bonding. Further, to test the dynamic stability the phonon dispersion calculations are performed (Fig. (a) and (b)) along Γ-K-M-Γ high-symmetry lines. The presence of real frequencies in both monolayers demonstrates good kinetic and dynamical stability.