MCQ
The relatively high boiling point of $HF$ is due to
- ✓Hydrogen bonding
- BCovalent bonding
- CUnshared electron pair on $F$
- DBeing a halogen acid
✓
Answer
Correct option: A.
Hydrogen bonding
a
Since fluorine is more electronegative than nitrogen, $H - F$ bonds are much more polar than $N - H$ bonds. Due to the high partial charges on $H$ and $F$ in $HF$, a Hydrogen bond between $HF$ molecules is much stronger than that between $NH_3$ molecules. The high boiling point of $HF$ is thus due to the strong $H$-bond.
Since fluorine is more electronegative than nitrogen, $H - F$ bonds are much more polar than $N - H$ bonds. Due to the high partial charges on $H$ and $F$ in $HF$, a Hydrogen bond between $HF$ molecules is much stronger than that between $NH_3$ molecules. The high boiling point of $HF$ is thus due to the strong $H$-bond.
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