His table, Mendeleev published in 1869, t. E. Before the main work of Meyer (Fig. 16) has been published. However, the honor of the discovery of the periodic table Mendeleev belongs  is not because of the publication of priority, the real reason is that, as the Mendeleev constructed his table. Fig. Page 16 of the periodic article published in 1869 in the "Journal of the Russian Chemical Society." This article Mendeleev first time detailed the basics of the Periodic Table. In order to satisfy the requirement that the columns must be the elements with the same valence, Mendeleev in one or two cases, I was forced to put the item with a slightly larger weight to a few lighter element. Thus, tellurium (atomic weight 127.6, valence 2) had to be placed before the iodine (atomic weight 126.9, valence 1), to the tellurium got into one column with the elements, the valence of which is equal to 2 and iodine was in one column with the elements, which is equal to the valence of 1 .
Amazing Spider-man #700 . 3
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