Question

What is the relationship between polarizability and intermolecular forces?

What is the relationship between polarizability and intermolecular forces?

Homework Answers

Answer #1

Instantaneous dipole on one of the atom can effect the electron distribution in neighbouring atoms and induce temporary dipole in those neighbours. as a result weak attractive forces develop known as london forces or dispersion forces (intermolecular forces)

The magnitude of london forces epends on polarisability

A smaller molecule or atom is less polaroisable and has smaller dispersion forces

A larger molecule or heavier atom is more polarisable and has larger dispersion forces

So polarisability directly proportional to intermolecular forces

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