Elements · ← H Hydrogen · Li Lithium →
He Helium
Basic facts
| Symbol | He |
|---|---|
| Atomic number | 2 |
| Standard atomic weight | 4.00260 |
| Group | 18 |
| Period | 1 |
| Block | s-block |
| Category | Noble gas |
| Standard state | Gas |
| Discovered | 1868 |
Source: PubChem, Helium (periodic table data, retrieved 2026-10-19). Group and period follow the standard 18-column periodic table.
Biotech uses & experiments
No dedicated element entries yet; the topics and entries below involve helium.
Topics on this site about helium
Entries elsewhere on the site that mention helium
Found by name, common compounds and chemical formulas in each entry.
- Lung MRI with helium-3 · Xenon and helium (noble gases in medicine) · 2004
Patents
Search Google Patents for helium in biological and medical uses: all patents · recent applications (2022+)
A patent is a legal claim, not proof that something works. See the Patents page.