Here's why:

* Weak Intermolecular Forces: Helium is a noble gas and exists as individual atoms. These atoms have very weak intermolecular forces (van der Waals forces), which are the forces that hold atoms or molecules together in a liquid or solid state.

* Low Atomic Mass: Helium has the lowest atomic mass of all elements. This contributes to its weak intermolecular forces.

Boiling Point: -268.93 °C (-452.07 °F)

Freezing Point: -272.2 °C (-457.96 °F)

It's worth noting that helium is the only element that remains a liquid at atmospheric pressure down to absolute zero (0 Kelvin or -273.15 °C).