1 янв 1817 г. - Johann Wolfgang Döbereiner
Описание:
At this time the periodic table did not existed and chemists were trying to find a way to organize the known elements. Döbereiner found a pattern to organize elements with similar chemical and physical properties and named them triads.Добавлено на ленту времени:
Дата:
1 янв 1817 г.
Сейчас
~ 208 г назад