HeColorless monatomic noble gas, lighter than air. Many applications in cryogenics. Space reserved for ads
| Molecular mass | 4 |
| Density | 0.161 g/m³ |
| Melting point | -272 ℃-458 ℉0.95 K |
| Boiling point | -269 ℃-452 ℉4.22 K |
Compound added to the database on July 12, 2022, last modified on August 19, 2022.
