Helium

Harleah Fonteyn

2026-03-30

Harleah is a Junior Researcher at Unset. She investigates subjects across culture, history, education and everyday life, helping to research and develop the material that becomes part of unset.world.

Helium — Section 01 — Overview

Helium is a colourless gas that is created inside stars when hydrogen atoms combine. It is found on Earth in natural gas deposits and in very small amounts in the air. Helium is used to fill balloons, MRI scanners, and in scientific research because it does not react easily. Its periodic table cell shows it has an atomic number of 2 and is a noble gas, meaning it is very stable.

Deeper page

Helium Nuclei

What can vary between helium nuclei while their element identity stays the same? Open Helium Nuclei to investigate.

Open page