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Chemistry portal; This article is supported by WikiProject Elements, which gives a central approach to the chemical elements and their isotopes on Wikipedia. Please participate by editing this article, or visit the project page for more details. Elements Wikipedia:WikiProject Elements Template:WikiProject Elements chemical elements: Low
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 ...
A chemical of obscure composition, ostensibly a powerful preventative of tooth decay and invariably referred to as "the miracle ingredient, fraudulin", it is a direct parody on the use of questionably effective "miracle additives" in advertising puffery. Frinkonium The Simpsons: Element, invented by Springfield scientist Professor Frink. Galine
Animals: inhaled in respiration Plants: exhaled in respiration; Biology: one of the most common elements in living organisms: Metallurgy: smelting of iron ore into steel Chemical industry: ethylene + O 2 —> ethylene oxide —> ethylene glycol —> many products Medicine Water treatment 9: F: Fluorine 2: 17
Selenium, which is an essential element for animals and prokaryotes and is a beneficial element for many plants, is the least-common of all the elements essential to life. [3] [63] Selenium acts as the catalytic center of several antioxidant enzymes, such as glutathione peroxidase, [11] and plays a wide variety of other biological roles.
Pages in category "Lists of chemical elements" The following 12 pages are in this category, out of 12 total. This list may not reflect recent changes. ...
Chemical substance – Form of matter; List of alchemical substances; List of chemical elements; List of minerals – List of minerals with Wikipedia articles; List of named alloys; List of straight-chain alkanes; Polyatomic ion – Ion containing two or more atoms; Exotic molecule – a compound containing one or more exotic atoms
This is a list of chemical elements and their atomic properties, ordered by atomic number (Z).. Since valence electrons are not clearly defined for the d-block and f-block elements, there not being a clear point at which further ionisation becomes unprofitable, a purely formal definition as number of electrons in the outermost shell has been used.