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The chemical elements can be broadly divided into metals, metalloids, and nonmetals according to their shared physical and chemical properties.All elemental metals have a shiny appearance (at least when freshly polished); are good conductors of heat and electricity; form alloys with other metallic elements; and have at least one basic oxide.
A metallic glass (also known as an amorphous or glassy metal) is a solid metallic material, usually an alloy, with a disordered atomic-scale structure. Most pure and alloyed metals, in their solid state, have atoms arranged in a highly ordered crystalline structure.
Typically, this is an oxidation reaction that robs the metal atoms of their itinerant electrons, destroying the metallic bonding. However metals are often readily soluble in each other while retaining the metallic character of their bonding. Gold, for example, dissolves easily in mercury, even at room temperature.
The metallic character of selenium is further shown by its lustre, [440] and its crystalline structure, which is thought to include weakly "metallic" interchain bonding. [441] Selenium can be drawn into thin threads when molten and viscous. [442] It shows reluctance to acquire "the high positive oxidation numbers characteristic of nonmetals". [443]
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 ...
Metallic bonding, type of chemical bonding; Metallicity, in astronomy the proportion of elements other than helium and hydrogen in an object; Metallic color, a color that gives the appearance of metal; Metallic dragon, a classification of dragon found in the role playing game Dungeons & Dragons; Metallic paint, paint that provides the ...
In chemistry, periodic trends are ... nuclear charge, and metallic character. [1] ... meaning that nucleophilicity decreases from left to right across the periodic table.
There is an abrupt and significant reduction in physical metallic character from group 11 to group 12. [49] Their chemistry is that of main group elements. [50] A 2003 survey of chemistry books showed that they were treated as either transition metals or main group elements on about a 50/50 basis.