Species : | $P_2: (B_2)$ | $Q_2:(C_2)$ | $R_2: (N_2)$ | $S_2(O_2)$ | $T_2 : (F_2)$ |
Bond order | $1.0$ | $2.0$ | $3.0$ | $2.0$ | $1.0$ |
Totnl No. of valence $e^-s$ | $6$ | $8$ | $10$ | $12$ | $14$ |
$\mathrm{HF}, \mathrm{H}_2, \mathrm{H}_2 \mathrm{~S}, \mathrm{CO}_2, \mathrm{NH}_3, \mathrm{BF}_3, \mathrm{CH}_4, \mathrm{CHCl}_3, \mathrm{SiF}_4$, $\mathrm{H}_2 \mathrm{O}, \mathrm{BeF}_2$
$XeO _{3}, XeO _{2} F _{2}, XeO _{4}, XeO _{3} F _{2}, Ba _{2} XeF _{4}$