Hydroxide

Hydroxide is a polyatomic ion consisting of oxygen and hydrogen:

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:−O−H

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It has a charge of −1. Hydroxide is one of the simplest of the polyatomic ions.

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The term hydroxyl group is used to describe the functional group -OH when it is a substituent in an organic compound. Organic molecules containing a hydroxyl group are known as alcohols (the simplest of which have the formula CnH2n+1-OH).

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A group of bases containing hydroxide are called hydroxide bases. Hydroxide bases will dissociate into a cation and one or more hydroxide ions in water, making the solution basic.

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Hydrogen hydroxide is another name for water, as is hydrohydroxic acid. Both names are based on the hydroxide ion.

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Polyatomic ion: A polyatomic ion is an ion consisting of a molecule with covalently bonded atoms or of a metal complex that can be considered as acting as a single unit in the context of acid/base chemistry or in the formation of salts. Note, a polyatomic ion is also referred to in older works as a radical. In curr...

Oxygen: :This article is about the chemical element oxygen. For other usage, see Oxygen (disambiguation)....

Functional group: In ecology functional groups are collections of organisms based on morphological, physiological, behavioral, biochemical, or environmental responses or on trophic criteria....