What is the number of lone pairs of electrons on $Xe$ in $XeF_2$?

The number of species from the following that have pyramidal geometry around the central atom is . . . . . . . . .
$S_2O_3^{2-}, SO_4^{2-}, SO_3^{2-}, S_2O_7^{2-}$

Are all the five bonds in $PCl_{5}$ molecule equivalent? Justify your answer.

Match List-$I$ with List-$II$.

List-$I$	List-$II$
$(a)$ $PCl_{5}$	$(i)$ Square pyramidal
$(b)$ $SF_{6}$	$(ii)$ Trigonal planar
$(c)$ $BrF_{5}$	$(iii)$ Octahedral
$(d)$ $BF_{3}$	$(iv)$ Trigonal bipyramidal

Choose the correct answer from the options given below.

The structure of $S_2Cl_2$ is analogous to:

If the dipole moments of $H_2S$,$NH_3$,$NF_3$,and $BF_3$ are $0.95 \ D$,$1.47 \ D$,$0.23 \ D$,and $0.0 \ D$ respectively,the molecule that has a trigonal planar structure is: