Question

explain why dipole movement of hydrogen halides decrease from HF to HI ?​

Answer 1

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★ This is because electronegativity of halogen atom decrease from F to I. hence, the polar character decrease and so is the dipole movement.

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Answer 2

hala mate,

The reason for this is due to a difference in electronegativity. The atom with the higher electronegativity will be better able to attract the bonded electrons, which have a negative charge, to its nucleus, which has a positive charge, thereby increasing the intensity of the dipole.

One reason for this is due to something know as shielding, or the idea that an increased number of negatively charged electrons occupying orbitals decreases the strength of positive charge coming from the nucleus, making it less strong of a pull from the nucleus on the bonded electrons and decreasing the dipole moment.

hope it helps!