28 dic 1894 anni - Noble Gases
Descrizione:
The noble gases in the periodic table are discovered by William Ramsay. He discovered neon, argon, krypton, and xenon and grouped them with helium and radon to form the noble gases.
Aggiunto al nastro di tempo:
Development and Discovery of Atomic Theory, the Periodic Table, and Radiation
Kelsey West
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