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periodic table of elementsthe periodic table of chemical elements is a list of chemical elements ordered from small to large according to their nuclear charge. the list is generally rectangular, with spaces in some elemental periods, so that elements with similar properties can be grouped into the same group, such as alkali metal elements, alkaline earth metals, halogen elements, rare gases, nonmetals, transition elements, etc. this makes the elements in the periodic table it was divided into seven main tribes, seven sub-tribes, eighth tribe and eighteen tribes. due to its ability to accurately predict the properties of various elements and their relationships, the periodic table is widely used in chemistry and other sciences as a useful framework for analyzing chemical behavior.