What is ion?

  • (noun): A particle that is electrically charged (positive or negative); an atom or molecule or group that has lost or gained one or more electrons.


An ion is an atom or molecule in which the total number of electrons is not equal to the total number of protons, giving the atom a net positive or negative electrical charge. The word ion is the transliteration of the Greek participle ἰόν (meaning "going"), and was first used by physicist Michael Faraday for the substances that move ("go") under a current between electrodes in a solution, when an electric field is applied.

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Some articles on ion:

... Ionăşeni may refer to several villages in Romania Ionăşeni, a village in Truşeşti Commune, Botoşani County Ionăşeni, a village in Vârfu Câmpului Commune, Botoşani County ...
Non-classical Ion
... In organic chemistry, a non-classical ion is a molecule with a positively charged carbon atom or atoms whose structure includes the sharing of two valence electrons by three atoms ... The term non-classical ion was first used by John D ... to the properties of cyclobutyl cations but the actual ions were first described by Saul Winstein in 1949 in order to explain the reactivity of certain norbornyl ...
Debye–Hückel Equation - Extensions of The Theory
... logarithm is the activity coefficient, is the integer charge of the ion (1 for H+, 2 for Mg2+ etc.), is the ionic strength of the aqueous solution, and ... The effective hydrated radius of the ion, a is the radius of the ion and its closely bound water molecules ... Large ions and less highly charged ions bind water less tightly and have smaller hydrated radii than smaller, more highly charged ions ...
Moldova National Football Team - Managers
... Period Coach 1991–1992 Ion Caras 1992 Eugen Piunovschi 1992–1997 Ion Caras 1998–1999 Ivan Danilianţ 1999–2001 Alexandru Maţiura 2001 Alexandru Spiridon 2002–2006 Viktor Pasulko 2006–2007 ...