Dimitri Mendeleev (7 gen 1864 anni – 7 ottob 1877 anni)

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Mendeleev completed similar work to Newlands however found that no matter how many times he tried to order the periodic table, it wouldn't work. Mendeleev is credited as the father of the periodic table as he realised that for the order to work, gaps would have to be left for further elements to be discovered

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