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Chemistry

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Concept information

Preferred term

counter ion  

Definition

  • A counterion (pronounced as two words, i.e. "counter" "ion", and sometimes written as two words) is the ion that accompanies an ionic species in order to maintain electric neutrality. In table salt (NaCl, also known as sodium chloride) the sodium ion (positively charged) is the counterion for the chloride ion (negatively charged) and vice versa. A counterion will be more commonly referred to as an anion or a cation, depending on whether it is negatively or positively charged. Thus, the counterion to an anion will be a cation, and vice versa. (From Wikipedia)

Synonym(s)

  • counterion

In other languages

URI

http://data.loterre.fr/ark:/67375/37T-K8DLMKWJ-T

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