Chemical reactions of the elements

Reaction of helium with air

Helium does not react with air, even under extreme conditions. The atmosphere contains traces of helium.

Reaction of helium with water

Helium does not react with water. It does, however, dissolve slightly to the extent of about 8.61 cm3 kg-1 at 20°C (293 K).

Reaction of helium with the halogens

Helium does not react with any of the halogens.

Reaction of helium with acids

Helium does not react with acids.

Reaction of helium with bases

Helium does not react with any bases.

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helium atomic number