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5 ene 1904 año - Richard Abegg found that inert gases have a “stable electron configuration.”

Descripción:

SEC is a chemically stable configuration. For example, helium, neon and argon are exceptionally stable and unreactive monoatomic gases.

Añadido al timeline:

15 may 2018
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fecha:

5 ene 1904 año
Ahora mismo
~ 121 years ago