Order the molecules from the strongest intermolecular force (top) to the weakest (bottom). refer the table of electronegativities to you.

1. HF>HCl>HBr>Hl

2. C

YT

The order of intermolecular forces among the given compounds will be:

Explanation:

Electronegativity is defined as the property of the element to attract the shared pair of electrons towards itself.

Strongest intermolecular forces of attraction means that the electronegativity difference between the elements forming bond is more, more polar is the bond.

Electronegativities of the elements are:

Hydrogen: 2.1

Fluorine: 3.98

Chlorine: 3.16

Bromine: 2.96

Iodine: 2.66

Electronegativity difference in HF = 3.98 - 2.1 = 1.88

Electronegativity difference in HCl = 3.16 - 2.1 = 1.06

Electronegativity difference in HBr = 2.96 - 2.1 = 0.86

Electronegativity difference in HI = 2.66 - 2.1 = 0.56

As, the electronegativity difference of Hf is the highest, so it has the strongest intermolecular forces of attraction.

Hence, the order of intermolecular forces among the given compounds will be: