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A list of current, dated, as well as proposed and historical signs and symbols is included here with its signification.Also given is each element's atomic number, atomic weight, or the atomic mass of the most stable isotope, group and period numbers on the periodic table, and etymology of the symbol.. Hazard pictographs are another type of symbols used in chemistry.




The chemical elements sorted by symbol in an alphabetical order. You can click on the column header to sort the table by that column. Click on an element symbol to get detailed facts about the element.


The symbol and name were used for element 105. Di: Didymium - Rare earth metal that proved to be a mixture of the elements praseodymium and neodymium. Dp: Decipium - Rare earth metal that proved to be a mixture of the elements samarium, neodymium and praseodymium. Eb: Ekaboron: 21 Name given by Mendeleev to an as of then undiscovered element.


Most chemical elements are represented symbolically by two letters, generally the first two in their name. In some cases, the first letter together with some other letter from their name was used, particularly when their first two letters had already been allocated to another element. A very few elements have symbols which appear to have no relationship with their names.


Other elements have symbols that don't seem to relate to their names at all! For these elements, the symbol usually refers to an older element name that isn't used anymore. History of the Abbreviations . In fact, there are eleven of the abbreviations for the elements which don't seem to match the modern name.






Symbol Symbol Name Meaning / definition Example { } set: a collection of elements: A = {3,7,9,14}, B = {9,14,28} | such that: so that: A = {x | x∈, x<0} A⋂B: intersection: objects that belong to set A and set B: A ⋂ B = {9,14} A⋃B: union: objects that belong to set A or set B: A ⋃ B = {3,7,9,14,28} A⊆B: subset: A is a subset of B ...


The following is a list of mathematical symbols used in all branches of mathematics to express a formula or to represent a constant.. A mathematical concept is independent of the symbol chosen to represent it. For many of the symbols below, the symbol is usually synonymous with its corresponding concept, but in some situations, a different convention may be used.