Johaan Wolfgang Döbereiner (1 gen 1820 anni – 31 dic 1830 anni)
Descrizione:
During this time period Johaan, noticed a pattern in 3 elements.He found that the
relative atomic mass of the middle
element lay roughly halfway between the lightest and heaviest elements in the group of three.
Aggiunto al nastro di tempo:
Data:
1 gen 1820 anni
31 dic 1830 anni
~ 11 years