



Helium gas
parRegina Ciccone•~1min de lecture
Genres et ambiance
Helium is a chemical element with the symbol He and it has an atomic mass of 4 u, with atomic number 2. At room temperature, helium is in the gaseous state.
Synopsis
Helium is a chemical element with the symbol He and it has an atomic mass of 4 u, with atomic number 2. At room temperature, helium is in the gaseous state.
LHistoire terminée~1min de lecture
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