Precursors to the Periodic Table
Lothar Meyer and Dmitri Ivanovich Mendeleevindependently produced remarkably similar versions of the periodic table of elements at the essentially the same time.Meyer’s 1864 textbook included a abbreviated version of a periodic table used to classify about half of the known elements. In 1868, Meyer constructed an extended table which he gave to a colleague for evaluation. This table unfortunately was not published until 1870, a year after Mendeleev’s table was published.Precursors to the Periodic Table In 1862, A.E.Beguyer de Chancourtois was the first person to make use of atomic weights to reveal that the elements were arranged according to their atomic weights with similar elements occurring at regular intervals. He drew the elements as a continuous spiral around a cylinder divided into 16 parts. A list of elements was wrapped around a cylinder so that several sets of similar elements lined up, creating the first geometric representation of the periodic law In 1863, John Newlands, an English chemist, proposed the Law of Octaves which stated that elements repeated their chemical properties every eighth element.The musical analogy was ridiculed at the time, but was found to be insightful after the work of Mendeleev and Meyer were published.
Mendeleev periodic table appeared in his work “On the Relationship of the Properties of the Elements to their Atomic Weights” in 1869. Mendeleev placed many elements out of order based on their accepted atomic weights at the time.Mendeleev predicted the existence and properties of unknown elements which he called eka-aluminum, eka-boron, and eka-silicon. The elements gallium, scandium and germanium were found later to fit his predictions quite well. The Fathers of the Periodic TableLothar Meyer and Dmitri Ivanovich Mendeleevindependently produced remarkably similar versions of the periodic table of elements at the essentially the same time.Meyer’s 1864 textbook included a abbreviated version of a periodic table used to classify about half of the known elements. In 1868, Meyer constructed an extended table which he gave to a colleague for evaluation. This table unfortunately was not published until 1870, a year after Mendeleev’s table was published.
Mendeleev periodic table appeared in his work “On the Relationship of the Properties of the Elements to their Atomic Weights” in 1869. Mendeleev placed many elements out of order based on their accepted atomic weights at the time.Mendeleev predicted the existence and properties of unknown elements which he called eka-aluminum, eka-boron, and eka-silicon. The elements gallium, scandium and germanium were found later to fit his predictions quite well. Precursors to the Periodic Table In 1862, A.E.Beguyer de Chancourtois was the first person to make use of atomic weights to reveal that the elements were arranged according to their atomic weights with similar elements occurring at regular intervals. He drew the elements as a continuous spiral around a cylinder divided into 16 parts. A list of elements was wrapped around a cylinder so that several sets of similar elements lined up, creating the first geometric representation of the periodic law In 1863, John Newlands, an English chemist, proposed the Law of Octaves which stated that elements repeated their chemical properties every eighth element.The musical analogy was ridiculed at the time, but was found to be insightful after the work of Mendeleev and Meyer were published.
The Modern Periodic Table 

Glenn Seaborg discovered periodic table is regarded as an ordering of the chemical elements demonstrating the periodicity of chemical and physical properties, credit for the first periodic table (published in 1862) probably should be given to a French geologist, A.E.Beguyer de Chancourtois. De Chancourtois transcribed a list of the elements positioned on a cylinder in terms of increasing atomic weight. When the cylinder was constructed so that 16 mass units could be written on the cylinder per turn, closely related elements were lined up vertically. This led de Chancourtois to propose that “the properties of the elements are the properties of numbers.” De Chancourtois was first to recognize that elemental properties reoccur every seven elements, and using this chart, he was able to predict the the stoichiometry of several metallic oxides. Unfortunately, his chart included some ions and compounds in addition to elements.
Lothar Meyer The Fathers of the Periodic Table


“Lothar Meyer The Fathers of the Periodic TableLothar Meyer The Fathers of the Periodic Table” width=”127″ height=”120″ class=”alignnone size-full wp-image-4377″ />
Mendeleev published his periodic table of all known elements (and predicted several new elements to complete the table, plus some corrected atomic weights) in 1869.
Meyer is best known for the share he had in the periodic classification of the elements. He noted, as did J. A. R. Newlands in England, that if they are arranged in the order of their atomic weights they fall into groups in which similar chemical and physical properties are repeated at periodic intervals; and in particular he showed that if the atomic weights are plotted as ordinates and the atomic volumes as abscissae, the curve obtained presents a series of maxima and minima, the most electro-positive elements appearing at the peaks of the curve in the order of their atomic weights

In 1863, John Newlands, an English chemist, proposed the Law of Octaves which stated that elements repeated their chemical properties every eighth element.” width=”109″ height=”150″ class=”alignnone size-full wp-image-4378″ />In 1863, John Newlands, an English chemist, proposed the Law of Octaves which stated that elements repeated their chemical properties every eighth element.

In 1862, A.E.Beguyer de Chancourtois was the first person to make use of atomic weights to reveal that the elements were arranged according to their atomic weights with similar elements occurring at regular intervals. He drew the elements as a continuous spiral around a cylinder divided into 16 parts. A list of elements was wrapped around a cylinder so that several sets of similar elements lined up, creating the first geometric representation of the periodic law.