Question

$H$-bond is strongest in:

• A. $C _{2} H _{5} OH$
• B. $H-F$
• C. $H_{2}O$
• D. $CH _{3} COCH _{3}$

Answer 1

Answer: (B)

$H-F$

Answer 2

All compound which have hydrogen atom attached to $F , O$ or $N$ atom (i.e. highly electronegative atoms) exhibit $H$ bonding. In the question $Hf$ exhibit strongest $H$ bonding because $F$ is most electronegative element.