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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 Jan 1894 Jahr - Ajout des gaz nobles
Beschreibung:
Les gaz nobles sont découverts par Sir William Ramsay et Lord Raleigh et ajoutés au tableau dans un nouveau groupe.
Zugefügt zum Band der Zeit:
Ligne de temps électricité-atome-tableau périodique
By
David Crowley
23 Apr 2019
0
0
1744
Datum:
1 Jan 1894 Jahr
Jetzt
~ 131 years ago
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