Question
The variation of the boiling point of the hydrogen halides is in the order $$HF > HI > HBr > HCl.$$ What explains the higher boiling point of hydrogen fluoride?
A.
The electronegativity of fluorine is much higher than for other elements in the group
B.
There is strong hydrogen bonding between $$HF$$ molecules
C.
The bond energy of $$HF$$ molecules is greater than in other hydrogen halides
D.
The effect of nuclear shielding is much reduced in fluorine which polarises the $$HF$$ molecule
Answer :
There is strong hydrogen bonding between $$HF$$ molecules
Solution :
Since, there is a strong hydrogen bonding between $$HF$$ molecules. Hence, boiling point is highest for $$HF.$$
$$HF > HI > HBr > HI$$