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Lothar Meyer


Lothar Meyer designed a table of elements which resembles the present periodic table. He did not publish this work until after the appearance of Mendeleev's first paper on the subject in 1869.<ref>Julian Trubin</ref>

Early Life

Julius Lothar Meyer was born on August 19, 1830. He was a German chemist, but before he was a chemist he was a teacher at Breslau, Karlsruhe,and Tubingen. Meyer was into the volume curve in 1869, which represented the relation between the atomic weights and atomic volumes of the elements. When he was in his mid twenties, Julius Lothar Meyer was part of the development of the periodic table. Meyer was the one to receive the Davy medal in 1822.<ref>[1]</ref>

Accomplishments

Julius did his work on an early periodic table based on a chart where he plotted atomic volumes against atomic weight. Meyer measured the volume of one atomic weights worth of even element and later he discovered that the number of atoms in each amount was the same, which lead to Julius discussing the volumes measured must represent the relative volumes of the individual atoms. Julius Lothar Meyer published a book in 1864, his book was named "Die Modernen Theorien Der Chemie (The Modern Chemical Theory.)" The reason he published a book was because he was influenced by Cannizzaro's remarks at the Karlsruhe. <ref>[2]</ref>

Meyer believed that the properties of an atom seem to depend on the atomic weight of the element. Meyer used a graph that used a serious of four sharp peaks and found clear signs of periodicity. He noticed the elements with similar chemical properties occur at comparable points on the different peaks which helped him complete a table of 28 elements in 1864, the elements were listed by their valence electrons and the elements were mainly main groups elements. Later in 1868 Julius Lothar Meyer made another table in which he incorporated transition metals and listed them in increasing weight order with elements with the same valence electrons.<ref>http://www.britannica.com/EBchecked/topic/379472/Lothar-Meyer</ref>

Three tables of elements were made by Julius Lothar Meyer, but he tables did not appear in a classification of elements that was created. The tables rather appeared on a section that was called The Nature of Atom: Atoms, by that time people debated whether atoms existed or not. <ref>http://www.euchems.org/Distinguished/19thCentury/meyerjulius.asp</ref>

Overall Julius Lothar Meyer had a successful life in which he accomplished many great things. His own version of the periodic tables was published around the year 1870, but he is still best remembered by his book "The Modern Chemical Theory", published in 1864 which couldn't of have happened without the influence of Cannizzaro.

Death

Meyer finally died on April 11, 1895, in Tübingen leaving major accomplishments in the Chemistry Theory.CITATION REQUIRED

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References

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