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A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualization 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 ...
Element Origin of name [1] [2] Group Period Block Standard atomic weight A r °(E) [a] Density [b] [c] Melting point [d] Boiling point [e] Specific heat capacity [f] Electronegativity [g] Abundance in Earth's crust [h] Origin [i] Phase at r.t. [j] Atomic number Z Symbol Name ( g / cm 3 ) (K) ( J / g · K ) ( mg / kg ) 1 H ...
English: This pictorial periodic table is colorful, boring, and packed with information. In addition to the element's name, symbol, and atomic number, each element box has a drawing of one of the element's main human uses or natural occurrences. The table is color-coded to show the chemical groupings.
Periodic tables usually at least show the elements' symbols; many also provide supplementary information about the elements, either via colour-coding or as data in the cells. The above table shows the names and atomic numbers of the elements, and also their blocks, natural occurrences and standard atomic weights. For the short-lived elements ...
FA: current Featured Picture used in the infobox: A: current infobox picture is of high quality (could become FP) B: current infobox picture is of good quality
Chemical symbol; Chemistry; Column groups and row groups; Glossary of chemistry terms; Group (periodic table) List of chemical element name etymologies; Main-group element; Period (periodic table) Table of nuclides (segmented, narrow) Table of nuclides (segmented, wide) The Elements (song) Talk:Period (periodic table) User:Aenon94; User:Albert ...
See also Group 3 element#Composition. d Group 18, the noble gases, were not discovered at the time of Mendeleev's original table. Later (1902), Mendeleev accepted the evidence for their existence, and they could be placed in a new "group 0", consistently and without breaking the periodic table principle. r Group name as recommended by IUPAC.
IUPAC temp systematic names (15; 104–118) also: E with alt name (7) symbols differ (11) subsets Mythical eka-altnames / deprecated naming controversies not-an-element after all Symbols Chemical symbol § Symbols for chemical elements irregular symbols (11) IUPAC systematic (Uxx) historical Timeline of chemical element discoveries alt/old name