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LIAISON POLAIRE [2 records]
Record 1 - internal organization data 2002-01-17
Record 1, English
Record 1, Subject field(s)
- Chemistry
- Electrolysis (Electrokinetics)
- Electrochemistry
- Geochemistry
Record 1, Main entry term, English
- ionic bond
1, record 1, English, ionic%20bond
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- electrovalent bond 1, record 1, English, electrovalent%20bond
correct
- polar bond 2, record 1, English, polar%20bond
correct
- ionic binding 3, record 1, English, ionic%20binding
- electrovalent binding 3, record 1, English, electrovalent%20binding
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A type of chemical bonding in which one or more electrons are transferred completely from one atom to another, thus converting the neutral atoms into electrically charged ions; these ions are approximately spherical and attract one another because of their opposite charge. 1, record 1, English, - ionic%20bond
Record 1, Key term(s)
- heteropolar bond
Record 1, French
Record 1, Domaine(s)
- Chimie
- Électrolyse (Électrocinétique)
- Électrochimie
- Géochimie
Record 1, Main entry term, French
- liaison ionique
1, record 1, French, liaison%20ionique
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- liaison électrovalente 2, record 1, French, liaison%20%C3%A9lectrovalente
correct, feminine noun
- liaison polaire 3, record 1, French, liaison%20polaire
correct, feminine noun
- liaison par électrovalence 4, record 1, French, liaison%20par%20%C3%A9lectrovalence
correct, feminine noun
- liaison hétéropolaire 5, record 1, French, liaison%20h%C3%A9t%C3%A9ropolaire
correct, feminine noun
- liaison électrostatique ionique 4, record 1, French, liaison%20%C3%A9lectrostatique%20ionique
correct, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Les liaisons ioniques ou polaires, de nature électrostatique, existent entre ions de charges contraires et obéissent à la loi de Coulomb. Dans ces liaisons, il se produit un transfert d'électron de l'élément électropositif vers l'élément électronégatif, chaque atome acquérant la configuration électronique d'un gaz rare. À l'exception des éléments et sulfures, les liaisons ioniques sont fréquentes dans le règne minéral. 6, record 1, French, - liaison%20ionique
Record number: 1, Textual support number: 2 CONT
[...] il est [quelquefois] difficile d'associer un nombre donné d'électrons à une liaison chimique. Ces liaisons sont parfois dites : liaisons sans électrons de liaison. C'est le cas de la liaison ionique qui réunit deux ions de signes contraires comme, par exemple, l'ion chlore et l'ion césium dans le cristal de chlorure de césium. 7, record 1, French, - liaison%20ionique
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Química
- Electrólisis (Electrocinética)
- Electroquímica
- Geoquímica
Record 1, Main entry term, Spanish
- enlace electrovalente
1, record 1, Spanish, enlace%20electrovalente
masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
- enlace iónico 1, record 1, Spanish, enlace%20i%C3%B3nico
masculine noun
Record 1, Textual support, Spanish
Record 2 - internal organization data 1999-10-13
Record 2, English
Record 2, Subject field(s)
- Electrolysis (Electrokinetics)
- Electrochemistry
- Chemistry
Record 2, Main entry term, English
- polar covalent bond
1, record 2, English, polar%20covalent%20bond
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
A bond in which a pair of electrons is shared in common between two atoms, but the pair is held more closely by one of the atoms. 2, record 2, English, - polar%20covalent%20bond
Record number: 2, Textual support number: 1 OBS
Covalent bonds may range from nonpolar, involving electrons evenly shared by the two atoms, to extremely polar, where the bounding electrons are very unevenly shared. The limit of uneven sharing occurs when the bounding electron(s) spends full time with one of the atoms. This makes this atom into a negative ions and leaves the other atom in the form of a positive ion. 3, record 2, English, - polar%20covalent%20bond
Record 2, French
Record 2, Domaine(s)
- Électrolyse (Électrocinétique)
- Électrochimie
- Chimie
Record 2, Main entry term, French
- liaison polaire
1, record 2, French, liaison%20polaire
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- liaison polarisée 2, record 2, French, liaison%20polaris%C3%A9e
correct, feminine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Liaison portant un moment électrique dipolaire. 1, record 2, French, - liaison%20polaire
Record number: 2, Textual support number: 1 CONT
Le caractère acide d'une molécule HA repose principalement sur la nature de la liaison chimique entre H et le reste A de la molécule. Si A est un élément très électronégatif (attirant très fortement le doublet électronique unissant A et H) la charge (-) se concentre vers A (donc la charge + vers H); à partir de cette liaison polarisée, l'ionisation de H, déjà amorcée, se trouvera facilitée, et l'acidité est accrue. 2, record 2, French, - liaison%20polaire
Record 2, Spanish
Record 2, Textual support, Spanish
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