What intermolecular force (s) is/are present in solid SO3?

1. London dispersion

2. dipole-dipole

3. hydrogen bonding

1. London dispersion

Explanation:

Sulphur trioxide (SO₃) -

The chemical compound SO₃ is planar in structure, the only intermolecular forces shown by SO₃ is the London forces.

dipole - dipole is not observed in this compound, as it is not possible to generate poles between the sulfur and oxygen atom due to very less difference in the electronegativity.

Hydrogen bonding is also not observed, because there is not hydrogen atom.

Hence, only London forces are observed in SO₃.