Ion
An ion () is an atom or molecule with a net electrical charge. The charge of an electron is considered to be negative by convention and this charge is equal and opposite to the charge of a proton, which is considered to be positive by convention. The net charge of an ion is not zero because its total number of electrons is unequal to its total number of protons.A cation is a positively charged ion with fewer electrons than protons (e.g. K+ (potassium ion)) while an anion is a negatively charged ion with more electrons than protons. (e.g. Cl- (chloride ion) and OH- (hydroxide ion)). Opposite electric charges are pulled towards one another by electrostatic force, so cations and anions attract each other and readily form ionic compounds.
If only a + or - is present, it indicates a +1 or -1 charge (2+ indicates charge +2, 2- indicates charge -2).
+2 and -2 charge look like this: O22- (negative charge, peroxide) He2+ (positive charge, alpha particle).
Ions consisting of only a single atom are termed atomic or monatomic ions, while two or more atoms form molecular ions or polyatomic ions. In the case of physical ionization in a fluid (gas or liquid), "ion pairs" are created by spontaneous molecule collisions, where each generated pair consists of a free electron and a positive ion. Ions are also created by chemical interactions, such as the dissolution of a salt in liquids, or by other means, such as passing a direct current through a conducting solution, dissolving an anode via ionization. Provided by Wikipedia
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Discrete symmetries of Dirac’s theory in the de Sitter manifold by Ion I. Cotăescu, Ion Cotăescu
Published 2023-10-01
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Geometry influence of stator and rotor armatures on energy efficiency of induction motors by Ion Voncilă, Elena Selim, Ion Paraschiv
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THE TRAINING OF INTERNATIONAL MANAGERS – SUCCESS FACTOR IN INTERNATIONAL BUSINESS by Ion BOTESCU
Published 2010-01-01
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The optimal efficiency index of a class of Hermite iterative methods with two steps by Ion Păvăloiu
Published 2000-02-01
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Error estimation in numerical solution of equations and systems of equations by Ion Păvăloiu
Published 1992-08-01
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Elena CONSTANTINOVICI. A biography evaluated in books by Ion BĂRBUȚĂ
Published 2023-12-01
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A convergency theorem concerning the chord method by Ion Păvăloiu
Published 1993-02-01
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Normative Conflicts in the context of Culture Wars by Ion PLĂMĂDEALĂ
Published 2022-12-01
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On computational complexity in solving equations by interpolation methods by Ion Păvăloiu
Published 1995-08-01
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On computational complexity in solving equations by Steffensen-type methods by Ion Păvăloiu
Published 1995-08-01
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INSTITUŢIILE PUTERII: FUNCŢIONALITATEA ÎN SISTEMUL POLITIC AL SOCIETĂŢII by Ion SANDU
Published 2015-11-01
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