Question

The highest boiling point among the hydrides of group $14,15,16$ and $17$ stands for:

• A. $H_{2}O$
• B. $HI$
• C. ${PH}_3$
• D. $Si{H}_4$

Answer 1

The correct option is A $H_{2}O$

The highest boiling point among the hydrides of group $14,15,16$ and $17$ stands for $H_{2}O$. It is due to $H$- bonding. It takes a lot more energy in an increased temperature to break the hydrogen bonds to free the water molecules.