Reference Entry

counter ion

Edited by Richard Rennie and Jonathan Law

in A Dictionary of Chemistry

Seventh edition

Published in print January 2016 | ISBN: 9780198722823
Published online January 2016 | e-ISBN: 9780191789540
counter ion

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An ion of opposite charge to a given ion. For example, in a crystal of sodium chloride, the chloride ions can be regarded as counter ions to the sodium ions. In certain colloids, the charge on the surface of colloidal particles is neutralized by oppositely charged counter ions in the surrounding solution....

Reference Entry.  54 words. 

Subjects: Chemistry

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