Amongst $ClF_3$,$BF_3$ and $NH_3$ molecules,the one with non-planar geometry is:

Which set of species is arranged in order of increasing $O-N-O$ bond angle?

Given below are two statements:
Statement $I:$ $SO_2$ and $H_2O$ both possess $V$-shaped structure.
Statement $II:$ The bond angle of $SO_2$ is less than that of $H_2O$.
In the light of the above statements,choose the most appropriate answer from the options given below:

If lone pairs of electrons occupy axial positions,then which of the following statements about $ClF_3$ is incorrect?

Match List-$I$ with List-$II$ and select the correct answer:

List-$I$ (species)	List-$II$ ($O-N-O$ angle)
$A$. $NO_2^+$	$1$. $180^{\circ}$
$B$. $NO_2$	$2$. $132^{\circ}$
$C$. $NO_2^-$	$3$. $115^{\circ}$
$D$. $NO_3^-$	$4$. $120^{\circ}$

Based upon $VSEPR$ theory,match the shape (geometry) of the molecules in List-$I$ with the molecules in List-$II$ and select the most appropriate option.

List-$I$ (Shape)	List-$II$ (Molecules)
$A$. $T$-shaped	$I$. $XeF_4$
$B$. Trigonal planar	$II$. $SF_4$
$C$. Square planar	$III$. $ClF_3$
$D$. See-saw	$IV$. $BF_3$