Helium

Element information

Atomic properties

Mass: 4.00260 u

Electron configuration: 1s2

Oxidation states: 0

Electronegativity: -

Physical properties

Density: 0.0001785 g/cm³

Standard state: gas

Melting point: 0.95 K

Boiling point: 4.22 K

₂He

Part of the Periodic Table 1 collection

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