14 ore 24 min, 1 gen 1869 anni - 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.
Aggiunto al nastro di tempo:
Data:
14 ore 24 min, 1 gen 1869 anni
Adesso
~ 155 years ago
