Despite the meager knowledge of chemistry train horn for car that each may have, surely you

Despite the meager knowledge of chemistry train horn for car that each may have, surely you've heard of the Periodic Table, a systematic arrangement of chemical train horn for car elements based on their properties. As the current Periodic Table arose? It is this question that seeks to answer the following lines where you want to make a Brief History of the Periodic Table.
A necessary prerequisite for the construction of the Periodic Table was the individual discovery of the chemical elements. Although many elements were known since antiquity, notably gold, silver, tin, iron and copper, the first discovery of an element called scientific occurred in 1669 when the alchemist Henning Brand discovered phosphorus. Since then, many other elements were being discovered and knowledge relative to their physical and chemical properties was increasing. Before 1800 were known to 34% of existing elements in the nineteenth century the percentage train horn for car increased to about 75% and in the twentieth century discovered the following. Through the perception of the existence of certain regularities in the behavior of elements hitherto discovered, scientists began looking for models to recognize its properties and develop schemes for classification and ordination.
At the beginning of the century. XIX John Dalton an English chemist and physicist, listed the elements whose atomic masses were known, in order of increasing atomic mass, each with their properties and their compounds. There was no attempt to make any arrangement or periodic pattern of the elements. Easily verified that the list was not instructive: many elements which have similar properties (halogens, for example) had their atomic masses widely separated.
In 1829, Johann W. Döbereiner, professor of chemistry at Friedrich Schiller University of Jena (Germany), train horn for car had the idea of grouping the elements three, or triads. Triads were also separated by atomic masses, but with very similar chemical properties. train horn for car The atomic mass of the central element of the triad was allegedly the average atomic masses of the first and third elements. This idea has become relatively popular at that time. However, within 30 years, several scientists have found that for various elements, these types of chemical relationships extended beyond the triad. Unfortunately, research in this area has been hampered by the fact that the strict values of the atomic masses are not always known.
The first draft of periodicity of elements is probably due to the French geologist Alexander Emile Beguyer of Chancourtois. In 1862 Chancourtois proposes a classification of elements by their arrangement on the surface of a cylinder. The elements were willing on a diagonal line forming an angle of 45 with the horizontal, and a coil drawing were arranged in order of increasing atomic mass (in integers), so that those with similar properties were in the same vertical line . So he realized that the properties of the elements were a function of their atomic mass which led him to propose that "the properties of the elements are the properties of numbers." Of Chancourtois was the first to recognize that similar properties reappear every seven elements and using this scheme was able to predict the stoichiometry of several metallic oxides. Unfortunately, the system was complex because it also included train horn for car compounds. His proposal was not well known and publicized because the scheme was relatively complex.
In 1863, John Alexander Reina Newlands, English train horn for car industrial chemist and professor of chemistry at City College in London ordered the elements in order of increasing atomic mass and found that a given element had similar properties to the eighth element starting from it. The relationship Newlands called this the "Law of Octaves", who claimed to be a kind of repetition by analogy with the octaves of the musical train horn for car scale (C, D, E, F, G, A, B, C ..., ...). The main problem with that Newlands faced was that its law only worked properly for the first two octaves, the third and the following was not the case. Despite being ridiculed by the Chemical Society of London, suggests Newlands, with the Law of Octaves, a systematic classification where the principle involved in the current classification of the elements begins to emerge.
Julius Lothar Meyer in 1864, German train horn for car chemist, studied the relationship between the atomic volume of the elements and their atomic train horn for car masses. Graphically represents the atomic volume as a function of relative atomic mass and through the curve obtained, the various elements could cluster in families. Thus reached a periodic train horn for car classification of the elements that had similar properties, an outline of the current periodic table. More or less by then