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Alisan
@alisan
he creator of the periodic table of chemical elements is Dmitri Ivanovich Mendeleev, a Russian chemist. In 1869, he introduced the first version of the periodic table. Mendeleev arranged the elements in a table based on the repeating pattern of their chemical properties, allowing him to predict the existence of ...
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Simsim
@simsim
This informarion is so good for us but i think it has complicated subject 161 $DEGEN
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