The number of bond pairs of electrons and the total number of lone pairs of electrons in $XeOF_4$ are respectively:

Which of the following is isostructural with $CO_2$?

Which one of the following compounds has the smallest bond angle?

Match List-$I$ with List-$II$ :

List-$I$	List-$II$
$A$. $H_3O^+$	$I$. Tetrahedral
$B$. Acetylide anion	$II$. Linear
$C$. $NH_4^+$	$III$. Pyramidal
$D$. $ClO_2^-$	$IV$. Bent

Choose the correct answer from the options given below :

Which among the following represents the correct order of variation of bond angles in the given molecules?

In molecules of the type $AX_2L_n$ (where $L$ represents lone pairs and $n$ is its number),there exists a bond between element $A$ and $X$. The $\angle XAX$ bond angle: