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jan 1, 1894 - Ajout des gaz nobles
Description:
Les gaz nobles sont découverts par Sir William Ramsay et Lord Raleigh et ajoutés au tableau dans un nouveau groupe.
Added to timeline:
Ligne de temps électricité-atome-tableau périodique
By
David Crowley
23 Apr 2019
0
0
1738
Date:
jan 1, 1894
Now
~ 131 years ago
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