![]() ![]() ![]() Magnesia, a district of Eastern Thessaly in GreeceĪlumina, from Latin alumen (gen. Symbol Na is derived from Neo-Latin natrium, coined from German Natron, ' natron'.Greek elements hydro- and -gen, ' water-forming'īeryl, a mineral (ultimately from the name of Belur in southern India) īorax, a mineral (from Arabic bawraq, Middle Persian * bōrag) The elements in group 1 are known as the alkali metals those in group 2. Groups are numbered 118 from left to right. Elements can be classified as metals, metalloids, and nonmetals, or as a main-group elements, transition metals, and inner transition metals. For more detailed information about the origins of element names, see List of chemical element name etymologies. Elements in the same group of the periodic table have similar chemical properties. Like the periodic table, the list below organizes the elements by the number of protons in their atoms it can also be organized by other properties, such as atomic weight, density, and electronegativity. It is a tabular arrangement of the elements by their chemical properties that usually uses abbreviated chemical symbols in place of full element names, but the linear list format presented here is also useful. The definitive visualisation of all 118 elements is the periodic table of the elements, whose history along the principles of the periodic law was one of the founding developments of modern chemistry. A chemical element, often simply called an element, is a type of atom which has the same number of protons in its atomic nucleus (i.e., the same atomic number, or Z). This is a list of the 118 chemical elements that have been identified as of 2023. List of the 118 identified chemical elements ![]()
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