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valency

A Dictionary of Earth Sciences | 1999 | | Copyright

valency The bonding potential of an atom, measured by the number of hydrogen ions (valency 1) that the atom could combine with or replace. In an ionic compound the valency (electrovalency) equals the ionic charge on each ion, e.g. in the compound MgO, Mg²⁺ shows a valency of +2, O²⁻ a valency of −2. In a covalent compound the valency (covalency) of an atom is equal to the number of bonds it forms, e.g. in CH₄ carbon has a valency of 4, hydrogen a valency of 1.

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AILSA ALLABY and MICHAEL ALLABY. "valency." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "valency." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1O13-valency.html

AILSA ALLABY and MICHAEL ALLABY. "valency." A Dictionary of Earth Sciences. 1999. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-valency.html

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valency

The Concise Oxford Dictionary of English Etymology | 1996 | | Copyright

valency (chem.) capacity of an atom to combine with other atoms. XIX. — late L. valentia power, competence, f. valēre be powerful; see -ENCY.

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T. F. HOAD. "valency." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>.

T. F. HOAD. "valency." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1O27-valency.html

T. F. HOAD. "valency." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-valency.html

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valency

A Dictionary of Ecology | 2004 | | Copyright

valency A measure of the number of other ions of a chemical element that can be combined with a particular atom.

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MICHAEL ALLABY. "valency." A Dictionary of Ecology. 2004. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "valency." A Dictionary of Ecology. 2004. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1O14-valency.html

MICHAEL ALLABY. "valency." A Dictionary of Ecology. 2004. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O14-valency.html

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valency

A Dictionary of Plant Sciences | 1998 | | Copyright

valency A measure of the number of other ions of a chemical element that can be combined with a particular atom.

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MICHAEL ALLABY. "valency." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "valency." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1O7-valency.html

MICHAEL ALLABY. "valency." A Dictionary of Plant Sciences. 1998. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-valency.html

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valency

A Dictionary of Zoology | 1999 | | Copyright

valency A measure of the number of other ions in a chemical element that can be combined with a particular atom.

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MICHAEL ALLABY. "valency." A Dictionary of Zoology. 1999. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "valency." A Dictionary of Zoology. 1999. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1O8-valency.html

MICHAEL ALLABY. "valency." A Dictionary of Zoology. 1999. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-valency.html

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valency

Oxford Dictionary of Rhymes | 2007 | Copyright

valency •radiancy •immediacy, intermediacy •expediency • idiocy • saliency •resiliency • leniency •incipiency, recipiency •recreancy • pruriency • deviancy •subserviency • transiency • pliancy •buoyancy, flamboyancy •fluency, truancy •constituency • abbacy • embassy •celibacy • absorbency •incumbency, recumbency •ascendancy, intendancy, interdependency, pendency, resplendency, superintendency, tendency, transcendency •candidacy •presidency, residency •despondency • redundancy • infancy •sycophancy • argosy • legacy •profligacy • surrogacy •extravagancy • plangency • agency •regency •astringency, contingency, stringency •intransigency • exigency • cogency •pungency •convergency, emergency, insurgency, urgency •vacancy • piquancy • fricassee •mendicancy • efficacy • prolificacy •insignificancy • delicacy • intricacy •advocacy • fallacy • galaxy •jealousy, prelacy •repellency • valency • Wallasey •articulacy • corpulency • inviolacy •excellency • equivalency • pharmacy •supremacy • clemency • Christmassy •illegitimacy, legitimacy •intimacy • ultimacy • primacy •dormancy • diplomacy • contumacy •stagnancy •lieutenancy, subtenancy, tenancy •pregnancy •benignancy, malignancy •effeminacy • prominency •obstinacy • pertinency • lunacy •immanency •impermanency, permanency •rampancy • papacy • flippancy •occupancy •archiepiscopacy, episcopacy •transparency • leprosy • inerrancy •flagrancy, fragrancy, vagrancy •conspiracy • idiosyncrasy •minstrelsy • magistracy • piracy •vibrancy •adhocracy, aristocracy, autocracy, bureaucracy, democracy, gerontocracy, gynaecocracy (US gynecocracy), hierocracy, hypocrisy, meritocracy, mobocracy, monocracy, plutocracy, technocracy, theocracy •accuracy • obduracy • currency •curacy, pleurisy •confederacy • numeracy •degeneracy • itinerancy • inveteracy •illiteracy, literacy •innocency • trenchancy • deficiency •fantasy, phantasy •intestacy • ecstasy • expectancy •latency • chieftaincy • intermittency •consistency, insistency, persistency •instancy • militancy • impenitency •precipitancy • competency •hesitancy • apostasy • constancy •accountancy • adjutancy •consultancy, exultancy •impotency • discourtesy •inadvertency • privacy •irrelevancy, relevancy •solvency • frequency • delinquency •adequacy • poignancy

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"valency." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>.

"valency." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1O233-valency.html

"valency." Oxford Dictionary of Rhymes. 2007. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O233-valency.html

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