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Magnesium monohydride is a molecular gas with formula MgH that exists at high temperatures, such as the atmospheres of the Sun and stars. [2] It was originally known as magnesium hydride, although that name is now more commonly used when referring to the similar chemical magnesium dihydride.
Mg + H 2 → MgH 2. Lower temperature production from Mg and H 2 using nanocrystalline Mg produced in ball mills has been investigated. [4] Other preparations include: the hydrogenation of magnesium anthracene under mild conditions: [5] Mg(anthracene) + H 2 → MgH 2. the reaction of diethylmagnesium with lithium aluminium hydride [6]
Mathisson, A. Papapetrou, and G. W. Dixon: Maurer–Cartan equation: Lie groups, Differential geometry: Ludwig Maurer and Élie Joseph Cartan: Maxwell's equations Maxwell relations: Electrodynamics Thermodynamics: James Clerk Maxwell James Clerk Maxwell Mayo–Lewis equation: Polymer chemistry: Frank R. Mayo and Frederick M. Lewis: Michaelis ...
118 chemical elements have been identified and named officially by IUPAC.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).
Ternary metal hydrides have the formula A x MH n, where A + is an alkali or alkaline earth metal cation, e.g. K + and Mg 2+.A celebrated example is K 2 ReH 9, a salt containing two K + ions and the ReH 9 2− anion.
The number of atoms of an element in a molecule or chemical compound is shown in the right subscript position (e.g., N 2 or Fe 2 O 3). If this number is one, it is normally omitted - the number one is implicitly understood if unspecified. A radical is indicated by a dot on the right side (e.g., Cl • for a neutral chlorine atom).
A chemical formula used for a series of compounds that differ from each other by a constant unit is called a general formula. It generates a homologous series of chemical formulae. For example, alcohols may be represented by the formula C n H 2n + 1 OH (n ≥ 1), giving the homologs methanol, ethanol, propanol for 1 ≤ n ≤ 3.
Chemistry (from Egyptian kēme (chem), meaning "earth" [1]) is the physical science concerned with the composition, structure, and properties of matter, as well as the changes it undergoes during chemical reactions.