Which overlapping is involved in $\mathrm{HCl}$ molecule :

Among the following species, identify the isostructural pairs

${\mathrm{NF}}_3 , {{\mathrm{NO}}_3}^{-}, {\mathrm{BF}}_3 , {\mathrm{H}}_3{\mathrm{O}}^{+} , {\mathrm{HN}}_3$