Johaan Wolfgang Döbereiner (1 jan 1820 ano – 31 dez 1830 ano)
Descrição:
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.
Adicionado na linha do tempo:
Data:
1 jan 1820 ano
31 dez 1830 ano
~ 11 years