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For stable elements, the formal standard atomic weight (s.a.w.) is added, as published by CIAAW. When the s.a.w. is in interval-notation, its conventional value is added too. Data is retrieved from central s.a.w. values lists, formatting is by {{Infobox element/standard atomic weight format}} (same as {{infobox element}}). Example:
This infobox must distinguish between three typical (exemplary) elements: E118 (regular element), E119 and E121. Handling of these element infoboxes is hardcoded in the meta-infobox, set by |number= (Z). Theoretical element: above-header shows; Theoretical element Applied: when element is theoretical (E119 and higher).
The cell links to parameter 2, usually the element name. If the page name is not the element name, as with [[Mercury (element)]], the correct pagename can be set through link=Mercury (element). Label. The link is labeled with parameter 3 (usually the symbol): link=[[Aluminium|Al]]. If there is no link provided (no parameter 2, no link ...
No description. Template parameters [Edit template data] Parameter Description Type Status symbol symbol no description Unknown optional number number no description Unknown optional name name no description Unknown optional image name image name no description Unknown optional image upright image upright no description Unknown optional proposed name proposed name no description Unknown ...
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Carbon (6 C) has 14 known isotopes, from 8 C to 20 C as well as 22 C, of which 12 C and 13 C are stable. The longest-lived radioisotope is 14 C, with a half-life of 5.70(3) × 10 3 years. This is also the only carbon radioisotope found in nature, as trace quantities are formed cosmogenically by the reaction 14 N + n → 14 C + 1 H. The most ...
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 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 ...