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Helium

(He)

2

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Category

Noble gas

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Relative atomic mass

4.0026

Density

0.1787

Melting point (°C)

26bar

Boiling point (°C)

-268.91

Electronegativity (Pauling)

—

Discovery year

1868

Discovered by

Electrons: 2

Protons: 2

Neutrons: 2

Wikipedia

created by @lukaswyss

Helium (He) – Element 2