What is the Meaning & Definition of periodic table

The periodic table to dry or the periodic table of the elements, as it is also called, is a box that classifies, organizes, and distributes the different chemical elements existing, then still its primary mission the order from the grouping of the elements comprising it. At present this table holds a special presence to bring knowledge of chemistry, since the study of similarly part of programs of secondary studies in the area of chemistry.
The Russian chemist Dmitri Ivánovich Mendeléyev is considered as its maker, though, the German chemist Julius Lothar von Meyer, contemporary and rival of Mendeleyev was also decisive in this sense creating a table ordered from the physical properties of atoms. Subsequently, the Swiss chemist Alfred Werner proposed the current version of the table which presents some modifications regarding the Mendeleyev.
It is impossible not to relate the appearance of the periodic table to several issues that were developing in the fields of physics and chemistry such as: the discovery of the elements (copper, gold, lead, silver, carbon, iron, Tin, sulfur, mercury, arsenic, Tin, among others), the study of the properties that they shared these elements and from classification, the concept of atomic mass which is the total mass of protons and neutrons present in an atom only when it is not in motion and the relationships that were established between atomic mass and the properties of the elements.
Many elements were already publicly since ancient times, although it should be noted, was fabulous from the 18th century knowledge of new elements, especially gases. Also, by that time Antoine Lavoisier proposes its list of simple substances that expands the knowledge of 33 items. In the 19th century the application of the electric battery in chemical works facilitated the discovery of alkali metals and alkaline earth elements.Article contributed by the team of collaborators.