Definition of anions. Meaning of anions. Synonyms of anions

Here you will find one or more explanations in English for the word anions. Also in the bottom left of the page several parts of wikipedia pages related to the word anions and, of course, anions synonyms and on the right images related to the word anions.

Definition of anions

anions
Ion I"on, n. 1. One of the electrified particles into which, according to the electrolytic dissociation theory, the molecules of electrolytes are divided by water and other solvents. An ion consists of one or more atoms and carries a unit charge of electricity, 3.4 x 10^-10 electrostatic units, or a multiple of this. Those which are positively electrified (hydrogen and the metals) are called cations; negative ions (hydroxyl and acidic atoms or groups) are called anions. Note: Thus, hydrochloric acid (HCl) dissociates, in aqueous solution, into the hydrogen ion, H^+, and the chlorine ion, Cl^-; ferric nitrate, Fe(NO3)3, yields the ferric ion, Fe^+++, and nitrate ions, NO3^-, NO3^-, NO3^-. When a solution containing ions is made part of an electric circuit, the cations move toward the cathode, the anions toward the anode. This movement is called migration, and the velocity of it differs for different kinds of ions. If the electromotive force is sufficient, electrolysis ensues: cations give up their charge at the cathode and separate in metallic form or decompose water, forming hydrogen and alkali; similarly, at the anode the element of the anion separates, or the metal of the anode is dissolved, or decomposition occurs. 2. One of the small electrified particles into which the molecules of a gas are broken up under the action of the electric current, of ultraviolet and certain other rays, and of high temperatures. To the properties and behavior of ions the phenomena of the electric discharge through rarefied gases and many other important effects are ascribed. At low pressures the negative ions appear to be electrons; the positive ions, atoms minus an electron. At ordinary pressures each ion seems to include also a number of attached molecules. Ions may be formed in a gas in various ways.
Anion
Anion An"i*on, n. [Gr. ?, neut. ?, p. pr. of ? to go up; ? up + ? to go.] (Chem.) An electro-negative element, or the element which, in electro-chemical decompositions, is evolved at the anode; -- opposed to cation. --Faraday.

Meaning of anions from wikipedia

- chlorine, forming sodium cations and chloride anions. Being oppositely charged, these cations and anions form ionic bonds and combine to form sodium chloride...
- indicates increased concentrations of unmeasured anions by proxy. Elevated concentrations of unmeasured anions like lactate, beta-hydroxybutyrate, acetoacetate...
- In organic chemistry, a radical anion is a free radical species that carries a negative charge. Radical anions are encountered in organic chemistry as...
- attributed to stabilization of the conjugate base, cyclopentadienyl anion. Cyclopentadienyl anions form a variety of cyclopentadienyl complexes. Cyclopentadienyl...
- The most common oxocarbon anions are carbonate, CO2−3, and oxalate, C2O2−4. There are however a large number of stable anions in this class, including...
- An anion exchange membrane (AEM) is a semipermeable membrane generally made from ionomers and designed to conduct anions but reject gases such as oxygen...
- "superelectrophilic anions". Furthermore, these superelectrophilic anions allow the direct reaction with small alkanes such as methane. Reactions with other anions are...
- electrophiles. Although nitrile anions are functionally similar to enolates, the extra multiple bond in nitrile anions provides them with a ketene-like...
- A phosphite anion or phosphite in inorganic chemistry usually refers to [HPO3]2− but includes [H2PO3]− ([HPO2(OH)]−). These anions are the conjugate bases...
- -ate, but different -ate anions might have different numbers of oxygen atoms. These rules do not work with all polyatomic anions, but they do apply to several...