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1 янв 1894 г. - Ajout des gaz nobles
Описание:
Les gaz nobles sont découverts par Sir William Ramsay et Lord Raleigh et ajoutés au tableau dans un nouveau groupe.
Добавлено на ленту времени:
Ligne de temps électricité-atome-tableau périodique
By
David Crowley
23 апр 2019
0
0
1744
Дата:
1 янв 1894 г.
Сейчас
~ 131 г назад
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