Question

$I$. Water has a much higher boiling point than $H_{2}S,H_{2}Se$ and $H_{2}Te$.
$II$. Water has a much lower molecular weight than $H_{2}S,H_{2}Se$ and $H_{2}Te$.

• A. Statement $I$ is true, Statement $II$ is true
• B. Statement $I$ is true, Statement $II$ is false
• C. Statement $I$ is false, Statement $II$ is true
• D. Statement $I$ is false, Statement $II$ is false

Answer 1

The correct option is A Statement $I$ is true, Statement $II$ is true

Water has a much higher melting point than $H_{2}S$ ,$H_{2}Se$ , $H_{2}Te$

because of intermolecular hydrogen bonding.

$H_{2}O$ hs much lower molecular weight than $H_{2}S$ , $H_{2}Se$ ,$H_{2}Te$ because of high atomic masses of S ,Se ,Te.