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Helium

(He)

Category

Noble gas

Relative atomic mass

4.002602

Density

0.0001785

Melting point (°C)

0.95

Boiling point (°C)

4.22

Electronegativity (Pauling)

0

Discovery year

1868

Discovered by

Pierre Janssen

created by @lukaswyss

Helium (He) – Element 2