$$ \text { Which of the following sets are correctly matched? } $$

$$ \begin{array}{llcc} \hline & \text { Molecule } & \begin{array}{c} \text { Number of lone } \\ \text { pair of electrons } \\ \text { on central atom } \end{array} & \text { Hybridisation } \\ \hline \text { (I) } & \mathrm{PCl}_3 & 1 & s p^3 \\ \hline \text { (II) } & \mathrm{SO}_2 & 2 & s p^3 \\ \hline \text { (III) } & \mathrm{SF}_4 & 2 & s p^3 d^2 \\ \hline \text { (IV) } & \mathrm{ClF}_3 & 2 & s p^3 d \\ \hline \end{array} $$

The number of molecules having lone pair of electrons on central atom in the following is

$\mathrm{BF}_3, \mathrm{SF}_4, \mathrm{SiCl}_4, \mathrm{XeF}_4, \mathrm{NCl}_3, \mathrm{XeF}_6, \mathrm{PCl}_5, \mathrm{HgCl}_2, \mathrm{SnCl}_2$

Observe the following molecules/ions $\mathrm{NH}_4^{+}, \mathrm{NH}_3, \mathrm{BF}_3, \mathrm{OH}^{-}, \mathrm{CH}_3^{+}, \mathrm{H}^{+}, \mathrm{CO}, \mathrm{C}_2 \mathrm{H}_4$.

The number of Lewis bases in the above list is

Identify the pair of molecules which have same hybridisation as the hybridisation in xenon (II) fluoride.