What are the main intermolecular forces found in a liquid sample of so2?

London Forces (also known as induced dipole, dipole forces)

Explanation:

The 3 types of inter molecular forces are induced dipole dipole forces, which everything has.

The other 2 types are permanent dipole dipole forces which are not present here since the molecule is non polar and hydrogen bonding which isn't here because there is no hydrogen and sulfur doesent get involved in it anyway.