Electronegativity: Inter vs Intramolecular Force

[Armaan1A]

Hello! I remember learning about there being intramolecular forces and intermolecular forces. I know intra is inside the molecule, while inter is between multiple molecules.

My question is, how does electronegativity affect the strength of interactions in both inter and intramolecular forces.

I think a higher electronegativity makes a molecule more polar, leading to stronger intermolecular forces, but was I unsure how a difference in electronegativity impacted on intramolecular forces.

[JaciNakamura_1C]

In intramolecular bonding electronegativity determines the type of bond (bond strength). Dr. Lavelle gave us the rough model that if the two atoms being bonded have an electronegativity difference greater than 2 it is an ionic bond, and if it is less than 1.5 it is a molecular bond. For intermolecular bonding, I believe you are right: more electronegativity difference, the greater the polarity, the stronger the dipole.