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cation

cation (kăt´ī´ən), atom or group of atoms carrying a positive charge. The charge results because there are more protons than electrons in the cation. Cations can be formed from a metal by oxidation (see oxidation and reduction), from a neutral base (see acids and bases) by protonation, or from a polar compound by ionization. Cationic species include Na+, Mg++, and NH4+. The cations of the transition elements have characteristic colors in water solution. Salts are made up of cations and anions. See ion.

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cation

cation A positive ion, i.e. an atom, or complex of atoms, that has lost one or more electrons and is left with an overall positive electric charge, e.g. Na+, Mg2+, NH4+. The name is derived from the fact that when an electric current is passed through a conducting solution the positive ions present in the solution move towards the cathode (the negative electrode). Compare ANION.

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cation

cat·i·on / ˈkatˌīən; -ˌīˌän/ • n. Chem. a positively charged ion, i.e., one that would be attracted to the cathode in electrolysis. The opposite of anion. DERIVATIVES: cat·i·on·ic / ˌkatīˈänik/ adj.

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cation

cation (kat-I-ŏn) n. a positively charged ion, which moves towards the cathode (negative electrode) when an electric current is passed through the solution containing it. Compare anion.

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cation

cation An ion that carries a positive electrical charge (e.g. the metallic element of salt compounds). A cation can combine with certain anions (which have negative charges).

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cation

cation An ion that carries a positive electrical charge (e.g. the metallic element of salt compounds). A cation can combine with certain anions (which have negative charges).

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cation

cation (electr.) a positive ion moving towards the cathode during electrolysis. XIX. — Gr. katión, f. CATA- 1 + ION; cf. CATHODE.

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cation

cation A positively charged ion, such as the sodium ion (Na+). Compare anion.

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cation

cation Positive ion that is attracted to the cathode during electrolysis.

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cation

cation Chemical term for a positively charged ion.

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cation

cationBrian, cyan, Gaian, Geminian, Hawaiian, ion, iron, Ixion, lion, Lyon, Mayan, Narayan, O'Brien, Orion, Paraguayan, prion, Ryan, scion, Uruguayan, Zion •andiron •gridiron, midiron •dandelion • anion • Bruneian •cation, flatiron •gowan, Palawan, rowen •anthozoan, bryozoan, Goan, hydrozoan, Minoan, protozoan, protozoon, rowan, Samoan, spermatozoon •Ohioan • Chicagoan • Virgoan •Idahoan •doyen, Illinoisan, IroquoianEwan, Labuan, McEwan, McLuhan, Siouan •Saskatchewan • Papuan • Paduan •Nicaraguan • gargantuan •carbon, chlorofluorocarbon, graben, hydrocarbon, Laban, radiocarbon •ebon • Melbourne • Theban •gibbon, ribbon •Brisbane, Lisbon •Tyburn •auburn, Bourbon •Alban • Manitoban • Cuban •stubborn •Durban, exurban, suburban, turban, urban

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