Question

$ICl,B{r}_2,HCl,H_{2}S,CO$
In which of these molecule is the van der Waals' force likely to be the most important in determining the melting point and boiling point?

• A. $ICl$
• B. $B{r}_2$
• C. $H_{2}S$
• D. None of these

Answer 1

The correct option is B $B{r}_2$

$B{r}_2$ being heavy halogen having more number of $e^{-}$ in valence shell which makes van der Waal's forces stronger, slightly increasing boiling and melting point.