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.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Attack of electrophile on benzene results in the formation of:
Match list $I$ with list $II$ and then select the correct answer from the codes given below the lists
→| list $I$ | list $II$ | ||
| $A.$ | Butane $\to $ Isobutane | $(a)$ | Cracking |
| $B.$ | Butane $\to $ Lower hydrocarbons | $(b)$ | Isomerisation |
| $C.$ | $n-$ Heptane $\to $ Toluene | $(c)$ | Reed reaction |
| $D.$ | Propane $\to CH_3CH_2CH_2SO_2Cl$ | $(d)$ | Aromatization |
The pH of a dilute solution of acetic acid was found to be 4.3 The addition of a small crystal of sodium acetate will cause pH to:
What is maximum number of orbitals that can be identified with the following quantum number?
$(A)$ and $(B)$ are
→Which of the following is not a buffer solution?
In the balanced chemical reaction,$IO_3^ - + a\;{I^ - } + b\;{H^ + } \to c\;{H_2}O + d\;{I_2}$ $a, b, c$ and $d $ respectively correspond to
→Which of the following is correct order of increasing size ?
Ritz combination principle is :
Which of the following compound does not show the amphoteric behaviour