Which of the following compounds has dipole-dipole interactions as the strongest intermolecular force?

a. n2
b. h2o
c. hbr
d. co2

Option (C) is the correct answer.

Explanation:

Dipole-dipole interactions are defined as the interactions that occur when partial positive charge on an atom is attracted by partial negative charge on another atom.

For example, in HBr molecule, as bromine is more electronegative in nature so, there will be partial positive charge on hydrogen and partial negative charge on bromine.

Therefore, HBr will have strongest intermolecular force.

In , there will be zero dipole moment. In , as oxygen is less electronegative in nature than bromine. Hence, will have less strong intermolecular forces as compared to HBr.

In , there will be no dipole-dipole interactions.

Thus, we can conclude that HBr compound has dipole-dipole interactions as the strongest intermolecular force.