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12 ore 38 min, 17 feb 1869 anni - Dmitri Mendeleev - Periodic Table

Descrizione:

Mendeleev created a table that ordered all known elements based on their atomic weight, there was a recurring pattern of properties between the groups of elements.

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Byriley
23 mar 2023
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Data:

12 ore 38 min, 17 feb 1869 anni
Adesso
~ 156 years ago
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