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

The compounds which have hydrogen atom attached to $F, O$ or $N$ atom exhibit hydrogen bonding. Among the given choices $HF$ exhibits strongest hydrogen bonding because is most electronegative element.