Helium is a colorless, odorless, non-flammable, and non-toxic noble gas, known for being the second lightest element and for its extremely low boiling point. It is chemically inert, making it safe and highly valuable for applications that require a stable, non-reactive atmosphere.

Helium is widely used in cryogenics (especially for cooling superconducting magnets in MRI machines), as a shielding gas in welding, in semiconductor and fiber optic manufacturing, and as a carrier gas in chromatography. It is also commonly recognized for its use in balloons, airships, and leak detection systems.