



Helium gas
porRegina Ciccone•~1min de lectura
Géneros y atmósfera
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.
Sinopsis
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.
LHistoria completada~1min de lectura
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