Question

Amongst $H_{2}O,H_{2}S,H_{2}Se$ and $H_{2}Te$, the one with the highest boiling point is :

• A. $H_{2}O$ because of hydrogen bonding
• B. $H_{2}Te$ because of highest molecular weight
• C. $H_{2}S$ because of hydrogen bonding
• D. $H_{2}Se$ because of lower molecular weight

Answer 1

The correct option is A $H_{2}O$ because of hydrogen bonding

Among $H_{2}O,H_{2}S,H_{2}Se$ and $H_{2}Te$, the one with the highest boiling point is $H_{2}O$ because of intermolecular hydrogen bonding which leads to molecular association and leads to higher energy for boiling.