Which of the following molecules consists of the minimum number of lone pairs of electrons in the valence shell of the central atom?

The three-dimensional structure of $CH_4$ is given below. The bonds are labelled as $W, X, Y$ and $Z$. What are the bonds lying in the plane $(A)$,projecting out of the plane away from the observer $(B)$ and projecting out of the plane towards the observer $(C)$?

$XeF_2$ molecule is

Based on the $VSEPR$ model,match the xenon compounds given in List-$I$ with the corresponding geometries and the number of lone pairs on xenon given in List-$II$ and choose the correct option.

List-$I$	List-$II$
$(P)$ $XeF_2$	$(5)$ Trigonal bipyramidal and three lone pairs of electrons
$(Q)$ $XeF_4$	$(3)$ Square planar and two lone pairs of electrons
$(R)$ $XeO_3$	$(2)$ Pyramidal and one lone pair of electrons
$(S)$ $XeO_3F_2$	$(4)$ Trigonal bipyramidal and no lone pairs of electrons

The geometry of the ammonia molecule can be best described as:

In compounds of type $ECl_3$,where $E = B, P, As$ or $Bi$,the angles $\angle Cl-E-Cl$ for different $E$ are in the order