Johann Wolfgang Döbereiner (TRIADS; he placed three elements into groups called triads) (1 янв 1829 г. – 9 авг 1829 г.)
Описание:
He placed various groups of three elements into groups called triads. One such triad was lithium, sodium, and potassium. Triads were based on both physical, as well as chemical, properties.Добавлено на ленту времени:
Дата:
1 янв 1829 г.
9 авг 1829 г.
~ 7 months