Multiple Choice QuestionWhat type of intermolecular force exists between the permanent dipoles of two polar molecules?Multiple choice question.Ionic bondPolar covalent bondLondon dispersion forcesDipole-dipole interactions

The type of intermolecular force that exists between the permanent dipoles of two polar molecules is Dipole-dipole interactions.

Here's a step-by-step explanation:

1. Intermolecular forces are the forces of attraction that exist between molecules in a substance.

2. These forces can be categorized into three main types: dipole-dipole interactions, London dispersion forces, and hydrogen bonding.

3. Dipole-dipole interactions occur between the positive end of one polar molecule and the negative end of another polar molecule.

4. Polar molecules have permanent dipoles, which means they have regions of positive and negative charge.

5. Therefore, the intermolecular force that exists between the permanent dipoles of two polar molecules is a dipole-dipole interaction.

Ionic bonds and polar covalent bonds are not intermolecular forces, they are types of chemical bonds. London dispersion forces are a type of intermolecular force, but they occur between all molecules, not just polar ones.