$\mathrm{BF}_3>\mathrm{BeCl}_2>\mathrm{SF}_6>\mathrm{SiCl}_4$

$\mathrm{BeCl}_2>\mathrm{SF}_6>\mathrm{SiCl}_4>\mathrm{BF}_3$

$\mathrm{BeCl}_2>\mathrm{SiCl}_4>\mathrm{BF}_3>\mathrm{SF}_6$

$\mathrm{BeCl}_2>\mathrm{BF}_3>\mathrm{SiCl}_4>\mathrm{SF}_6$

$\mathrm{He}_2, \mathrm{Ne}_2$ only

$\mathrm{Li}_2^{2-}, \mathrm{Ne}_2, \mathrm{He}_2$ only

$\mathrm{Be}_2^{-}, \mathrm{He}_2, \mathrm{Ne}_2$ only

$\mathrm{H}_2^{+}, \mathrm{L}_2^{2-}$ only

1

$1+\frac{R T}{P b}$

$1-\frac{R T}{P b}$

$1+\frac{P b}{R T}$

van der Waals' constants ' $a$ ' of $\mathrm{CO}_2$ and $\mathrm{NH}_3$ are greater than that of $\mathrm{N}_2$.

Van der Waals' constant ' $a$ ' of $\mathrm{CO}_2$ and $\mathrm{NH}_3$ are less than that of $\mathrm{N}_2$.

' $a$ ' $\left(\mathrm{NH}_3\right)>$ ' $a$ ' $\left(\mathrm{N}_2\right)$ but ' $a$ ' $\left(\mathrm{CO}_2\right)<$ ' $a$ ' $\left(\mathrm{N}_2\right)$

' $a$ ' $\left(\mathrm{NH}_3\right)<$ ' $a$ ' $\left(\mathrm{N}_2\right)$ but ' $a$ ' $\left(\mathrm{CO}_2\right)>$ ' $a$ ' $\left(\mathrm{N}_2\right)$