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In a paper dated December 1869, which appeared early in 1870, Meyer published a tabular replacement array of 55 elements, during which a component of the metal group ends the series of periods. The paper also included a line chart of relative atomic volumes, which illustrated periodic relationships of the physical characteristics of the given elements. It assisted Meyer in choosing where details should appear in his table. By this point, he had already seen the publication of Mendeleev's first tabular array, but his work seems to have mainly been independent.

In 1869,     Russian chemist Dmitri Ivanovich Mendeleyev arranged 63 elements by increasing mass in several columns, noting recurring chemical properties. It's sometimes said that he played "chemical solitaire" on long train journeys, using cards with the symbols and, therefore, the atomic weights of the known elements. Another possibility is that he was partially inspired by the Sanskrit alphabet's periodicity, which was acknowledged to him by his friend and linguist Otto von Böhtlingk. Mendeleev used the trends he saw to suggest that atomic weights of some elements were incorrect and accordingly changed their placements: for example, he figured there was no place for trivalent beryllium with the mass of 14 in his work, and he cut both the relative atomic mass and valency of beryllium by a 3rd, suggesting it was a divalent element with the mass of 9.4. Mendeleev widely printed broadsheets of the table to varied chemists in Russia and abroad. Mendeleev argued in 1869, that there have been seven styles of highest oxides. Mendeleev continued to boost his ordering; in 1870, it gained a tabular shape, and every column was given its own highest oxide; in 1871, he further developed it and formulated what he termed the "law of periodicity." Some changes also occurred with new revisions, with some elements changing positions.

~Manit, Vivaan, Devraj, Aarav, Soha

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Mendeleev's Periodic table - Devraj, Vivaan, Manit, Aarav

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Mendeleev's Periodic table - Devraj, Vivaan, Manit, Aarav

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Chart: Timeline for periodic table development- 1900-1944 (group 3- anang, arya, heet and dhruv)

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Chart: Timeline for periodic table development- 1900-1944 (group 3- anang, arya, heet and dhruv)

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Presentation: Timeline for periodic table development- 1900-1944 (group 3- anang, arya, heet and dhruv)

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Presentation: Timeline for periodic table development- 1900-1944 (group 3- anang, arya, heet and dhruv)

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Döbereiner's Work on the Periodic Table 

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Döbereiner's Work on the Periodic Table - Shreeya, Vaama P. & Rajvi

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Döbereiner's Work on the Periodic Table - Shreeya, Vaama P. & Rajvi

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Kreesha kinarivala- newlands periodic table

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Kreesha kinarivala- newlands periodic table