| name | Helium |
| latin | Helium |
| french | Hélium |
| german | Helium |
| symbol | He |
| proton number | 2 |
| atomic weight | 4.002602 |
| Pauling electronegativity | - |
| electronic configuration | 1s2 |
| melting point | 0.95 K, -272.2°C, -457.96°F |
| boiling point | 4.22 K, -268.93°C, -452.07°F |
| group | 18 |
| period | 1 |
| state (by 20°C) | gas |
| oxidation states | - |
| Year of discovery | Discoverers |
| 1868 | Pierre Janssen (1824-1907) |
| 1895 | Sir William Ramsay (1852-1916) and independently Nils Abraham Langlet (1868-1936) and Per Teodor Cleve (1840-1905) |