I saw in a dream a table where all the elements fell into place as required. Awakening, I immediately wrote it down on a piece of paper

Dmitri Mendeleev(Feb 8, 1834 to Feb 2,1907)

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.

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