Characteristics of the element
| Symbol: He |
| Name: Helium |
| Latin name: Helium |
| Atomic number: 2 |
| Atomic mass: 4,002602 |
| Melting point: -272,2 (°C) |
| Boiling point: -268,93 (°C) |
| Density 0,000179 (g/cm 3 ) |
| Electronegativity: 4,5 |
| Oxidation number: 0 |
| Number of neutrons: 2 |
| Crystal structure: Hexagonal |
| Chemical serie: Noble gases |
| Color: colorless |
| Electron configuration: 2 |
| Year of discovery:: 1895 |
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Update: 26.11.25
Update: 26.11.25