Question

In which of the following substances will hydrogen bond be strongest?

• A. $H_{2}S$
• B. $HCl$
• C. $HI$
• D. $H_{2}O$

Answer 1

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

Small-sized and highly electronegative atoms $\text{i.e., O, N}$ and $F$ are capable of forming hydrogen bonds. Among all the options given, only $H_{2}O$ has one of these atoms i.e., oxygen, so only this will form hydrogen bond.

Since only $H_{2}O$ forms hydrogen bond, the correct answer is option $\left(B\right).$