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anion

anion (ăn´ī´ən), atom or group of atoms carrying a negative charge. The charge results because there are more electrons than protons in the anion. Anions can be formed from nonmetals by reduction (see oxidation and reduction) or from neutral acids (see acids and bases) or polar compounds by ionization. Anionic species include Cl-, SO4--, and CH3COO-. Highly colored intermediates in organic reactions are often radical anions (anions containing an unpaired electron). Salts are made up of anions and cations. See ion.

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anion

anion (an-I-ŏn) n. a negatively charged ion, which moves towards the anode (positive electrode) when an electric current is passed through the solution containing it. Compare cation. a. gap the difference between the concentrations of cations (positively charged ions) and anions, calculated from the formula (Na+ + K+) – (HCO3− + Cl): it is used to estimate the unaccounted-for anions in the blood in cases of metabolic disturbance.

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anion

anion A negative ion, i.e. an atom, or complex of atoms, that has gained one or more electrons and thereby carries a negative electric charge (e.g. Cl, OH, and SO2−4). It is so called because when an electric current is passed through a conducting solution the negative ions present in the solution are attracted to the anode (the positive electrode). Compare cation.

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anion

anion A negative ion, i.e. an atom, or complex of atoms, that has gained one or more electrons and thereby carries a negative electric charge, e.g. Cl, OH, and SO42−. So-called because when an electric current is passed through a conducting solution the negative ions present in the solution are attracted to the anode (the positive electrode). Compare CATION.

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anion

an·i·on / ˈanˌīən/ • n. Chem. a negatively charged ion, i.e., one that would be attracted to the anode in electrolysis. The opposite of cation. DERIVATIVES: an·i·on·ic / ˌanīˈänik/ adj.

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anion

anion (electr.) ion with negative charge which moves towards the anode during electrolysis. XIX. — Gr. anión, f. ANA- + ION; cf. ANODE.

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anion

anion A negatively charged ion, such as the chloride ion (Cl). Compare cation.

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anion

anion Negative ion attracted to the anode (positive electrode) during electrolysis.

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anion

anion An ion that carries a negative electrical charge.

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anion

anion A negatively charged ion.

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anion

anionBrian, cyan, Gaian, Geminian, Hawaiian, ion, iron, Ixion, lion, Lyon, Mayan, Narayan, O'Brien, Orion, Paraguayan, prion, Ryan, scion, Uruguayan, Zion •andiron •gridiron, midiron •dandelion • anion • Bruneian •cation, flatiron •gowan, Palawan, rowen •anthozoan, bryozoan, Goan, hydrozoan, Minoan, protozoan, protozoon, rowan, Samoan, spermatozoon •Ohioan • Chicagoan • Virgoan •Idahoan •doyen, Illinoisan, IroquoianEwan, Labuan, McEwan, McLuhan, Siouan •Saskatchewan • Papuan • Paduan •Nicaraguan • gargantuan •carbon, chlorofluorocarbon, graben, hydrocarbon, Laban, radiocarbon •ebon • Melbourne • Theban •gibbon, ribbon •Brisbane, Lisbon •Tyburn •auburn, Bourbon •Alban • Manitoban • Cuban •stubborn •Durban, exurban, suburban, turban, urban

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