Mendeleev periodic table
Originally shared by Vladimir Pecha
Today in 1907: Dmitri Ivanovich Mendeleev died (8 February 1834 – 2 February 1907).
Russian chemist and inventor. He formulated the Periodic Law, created a farsighted version of the periodic table of elements, and used it to correct the properties of some already discovered elements and also to predict the properties of eight elements yet to be discovered.
https://en.wikipedia.org/wiki/Dmitri_Mendeleev
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