The number of lone pairs of electrons on the central $I$ atom in $I_{3}^{-}$ is $.......$

The correct statement regarding the number of lone pairs on the central atom of molecules $SF_4$,$CF_4$,and $XeF_4$ is:

The sets of molecules in which the central atom has no lone pair of electrons are:
$i$. $SnCl_2, NH_3, SF_4$
$ii$. $HgCl_2, SO_3, SF_6$
$iii$. $BeCl_2, BF_3, PCl_5$
$iv$. $ClF_3, BrF_5, XeF_6$

What is the shape of the ammonia $(NH_3)$ molecule?

Match the molecular geometries in List-$I$ with their corresponding molecules in List-$II$:

$A$. Trigonal planar	$I$. $PCl_5$
$B$. Tetrahedral	$II$. $SF_6$
$C$. Trigonal bipyramidal	$III$. $BF_3$
$D$. Octahedral	$IV$. $CCl_4$

The correct match for $A, B, C, D$ is:

In a $AX_2L_n$ compound,if $X$ is a bond pair and $n$ is the number of lone pairs of electrons,which of the following options is incorrect?