NEET · Chemistry · STD 12 - p -Block elements - ll
The variation of the boiling points ofthe hydrogen halides is in the order \(HF > HI > HBr > HCl.\) What explains the higher boiling point of hydrogen fluoride ?
- A There is strong hydrogen bonding between \(HF\) molecules.
- B The bond energy of \(HF\) molecules is greater than in other hydrogen halides.
- C The effect of nuclear shielding is much reduced in fluorine which polarises the \(HF\) molecule.
- D The electronegativity of fluorine is much higher than for other elements in the group.
Answer & Solution
Correct Answer
(A) There is strong hydrogen bonding between \(HF\) molecules.
Step-by-step Solution
Detailed explanation
Due to strong \(H-\)bonding in \(HF\) molecule, boiling point is highest for \(HF\) \(\mathrm{HF} > \mathrm{Hl} > \mathrm{HBr} > \mathrm{Hl}\)
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