Elio
Hélium · Helium · Гелий · 헬륨 · Гелий · Hélio · Heliu · Хелијум · Helium · Гелий · هلیوم · Hélium
| CAS | 7440-59-7 |
|---|---|
| EC | 231-168-5 |
| UN | 1963 |
| Formula | He |
| Massa molare | 4,0026 g/mol |
| Densità relativa del gas o del vapore (aria = 1) | 0,138 |
| GHS | Attenzione · H280, H281 |
Helium(0) is a monoatomic helium. It has a role as a NMR chemical shift reference compound and a member of food packaging gas. Helium appears as a colorless, odorless, noncombustible gas. Can asphyxiate. Inhalation causes the voice to become squeaky (Mickey Mouse voice).