Which of the following has dipole-dipole interaction between the species possess | TestHub

Passage / Comprehension

The sum of three attractive forces—Keesom forces, Debye forces, and London forces—is called the van der Waals forces. Thus, the total attractive interaction energy is given by:

$E_{a tt r a c t i v e} = E_{K} + E_{D} + E_{L}$

$E_{K}$ : It arises due to the proper orientation of the permanent dipole moments of the molecules.

$E_{D}$ : It arises due to the interaction of an induced dipole moment of one molecule with the permanent dipole moment of the polarizing molecule.

$E_{L}$ : It arises due to the interaction between instantaneously developed dipole moments through the synchronization of charge cloud imbalance.

Which of the following has dipole-dipole interaction between the species possessing permanent dipole?

Options:(select one or more)

Answer:

A, C

Solution:

Liquid NH₃: Ammonia is a polar molecule due to its trigonal pyramidal shape and the electronegativity difference between N and H.

Liquid He: Helium is a noble gas and non-polar; it only exhibits London dispersion forces.

Solid ICl: Iodine monochloride is polar because Cl is more electronegative than I, creating a permanent dipole.

Liquid Br₂: Bromine is a homonuclear diatomic molecule, making it non-polar.

Thus, only Liquid NH₃ and Solid ICl have dipole-dipole interactions.

Chemistry - CHEMICAL BONDING Question with Solution | TestHub

Options:(select one or more)

Doubts & Discussion