![]() Additionally, elements are placed in order of increasing atomic number, which is the number of protons in the nucleus of the element’s atom. The metals are on the left and the non-metals on the right. As well, most copies of the periodic table separate the metal and non-metal elements with a dark stair-step line. Out of all of the elements, 94 are found in nature and the other 24 were synthetically produced with particle accelerators. The current table holds 117 elements in a very distinct order for the purpose of showing similarities and differences in chemical properties. The structure of the periodic table is very significant. Since its original creation, new elements have been discovered and added to Mendeleev’s initial table. He intended to display the patterns apparent in the chemical properties of each element. ![]() ![]() The Russian chemist Dmitri Mendeleev is credited with its creation in 1869, although less extensive tables existed before this. The periodic table, also known as Mendeleev’s table, is a table of the chemical elements existing on Earth.
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