14 h 24 m, 1 jan 1869 ano - Dmitri Mendeleev publishes his first periodic table he made that was arranged in order of increasing atomic mass, the similarities of the elements appeared at regular intervals in a periodic pattern. There were several empty spaces in his table.
Adicionado na linha do tempo:
Data:
14 h 24 m, 1 jan 1869 ano
Agora
~ 155 years ago
