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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 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 element is a substance that cannot be divided or changed into different substances by ordinary chemical methods. The smallest particle of such an element is an atom , which consists of electrons centered around a nucleus of protons and neutrons .
C 35 H 42 O 14: Taxinine M: C 35 H 60 O 6: Eleutheroside A: C 36 N 2 O 6: Cepharanoline: C 37 H 44 O 13: Taxagifine: C 37 H 48 N 2 O 8: Cytotrienin A: C 37 H 59 N 5 O 6: Caldoramide: 1961308-67-7 C 37 H 64 O 6: Chamuvarinin: C 38 H 65 NO 29: lacto-n-difucohexaose II: C 39 H 48 N 2 O 9: Kidamycin: 11072-82-5 C 40 H 48 N 6 O 10: Bouvardin: C 40 H ...
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
Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...
The following are subcategories containing chemical compounds by element. An alternative listing of inorganic compounds may be found at inorganic compounds by element . Wikimedia Commons has media related to Chemical compounds by element .
This WikiProject aims to provide high-quality, standardized articles in Wikipedia for all important chemicals, similar to the Merck Index.This comprises all organic and inorganic compounds, elements, reagents, commodities, pharmaceuticals, pollutants, and other large-scale and small-scale chemicals of interest.
Chemical elements are sometimes named after people, especially the synthetic elements discovered (created) after c. 1940. Very few are named after their discoverers, and only two have been named after living people: the element seaborgium was named after Glenn Seaborg , who was alive at the time of naming in 1997; [ 5 ] and in 2016 oganesson ...