1 jan 1870 ano - Mendeleev adds on to the periodic table (and then some!)

Descrição:

Russian Chemist Dimitri Mendeleev completes the periodic table based on Meyer's finding by creating a textbook. In this textbook, Mendeleev adds a chart containing the elements. Interestingly, Mendeleev had the instinct to put these elements in a specific order when he remembered them in a dream.

He would later correct one mistake, but he would also add predictions to his table, believing that the chart still needed eight other elements.

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