Hydrogen Halide Boiling Point Trends
HF has the highest boiling point among the hydrogen halides, while the boiling points for the others increase in the order HCl < HBr < HI. Given that HF also has the largest dipole moment, which of the following best explains these trends?
A
HF exhibits hydrogen bonding, but polarizability increases down the group
B
Dipole-dipole forces are weaker than dispersion forces in all cases
C
The dipole moment of HF is actually smaller than the others
D
Ion-dipole forces dominate in HCl, HBr, and HI
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