TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
ISOTOPO INESTABLE [6 records]
Record 1 - internal organization data 2015-05-06
Record 1, English
Record 1, Subject field(s)
- Atomic Physics
- Chemistry
Record 1, Main entry term, English
- radioisotope
1, record 1, English, radioisotope
correct, standardized
Record 1, Abbreviations, English
Record 1, Synonyms, English
- radioactive isotope 2, record 1, English, radioactive%20isotope
correct
- radio isotope 3, record 1, English, radio%20isotope
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
An isotope that undergoes spontaneous decay and emits radiation. 4, record 1, English, - radioisotope
Record number: 1, Textual support number: 1 CONT
All atoms with nuclei containing the same number of protons have identical chemical properties and are called isotopes of the element in question. Isotopes may be radioactive or stable. 5, record 1, English, - radioisotope
Record number: 1, Textual support number: 1 OBS
radioisotope: This term should not be used with the meaning of radionuclide. 6, record 1, English, - radioisotope
Record number: 1, Textual support number: 2 OBS
radioisotope: term standardized by ISO in 1997. 7, record 1, English, - radioisotope
Record 1, French
Record 1, Domaine(s)
- Physique atomique
- Chimie
Record 1, Main entry term, French
- radio-isotope
1, record 1, French, radio%2Disotope
correct, masculine noun, standardized
Record 1, Abbreviations, French
Record 1, Synonyms, French
- isotope radioactif 2, record 1, French, isotope%20radioactif
correct, masculine noun
- radioisotope 3, record 1, French, radioisotope
correct, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Isotope qui subit une désintégration spontanée et émet un rayonnement. 4, record 1, French, - radio%2Disotope
Record number: 1, Textual support number: 1 OBS
radio-isotope : Ce terme ne doit pas être employé dans le sens de radionucléide. 5, record 1, French, - radio%2Disotope
Record number: 1, Textual support number: 2 OBS
radio-isotope : terme normalisé par l'ISO en 1997. 6, record 1, French, - radio%2Disotope
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Física atómica
- Química
Record 1, Main entry term, Spanish
- isótopo radiactivo
1, record 1, Spanish, is%C3%B3topo%20radiactivo
correct, masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
- radioisótopo 2, record 1, Spanish, radiois%C3%B3topo
correct, masculine noun
- radisótopo 3, record 1, Spanish, radis%C3%B3topo
correct, masculine noun
- isótopo inestable 4, record 1, Spanish, is%C3%B3topo%20inestable
correct, masculine noun
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Variante de un elemento químico con el mismo número de electrones y neutrones pero diferente número de neutrones y propiedades radiactivas. 5, record 1, Spanish, - is%C3%B3topo%20radiactivo
Record 1, Key term(s)
- isótopo radioactivo
Record 2 - external organization data 2011-08-26
Record 2, English
Record 2, Subject field(s)
- Chemistry
- Compartment - Canadian Nuclear Safety Commission
- Atomic Physics
Record 2, Main entry term, English
- actinium
1, record 2, English, actinium
correct
Record 2, Abbreviations, English
- Ac 2, record 2, English, Ac
correct
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
A radioactive trivalent metallic element resembling lanthanum in chemical properties formed by alpha radiation from protactinium and found especially in pitchblende. 3, record 2, English, - actinium
Record number: 2, Textual support number: 1 OBS
Symbol: Ac. 3, record 2, English, - actinium
Record number: 2, Textual support number: 2 OBS
First member of the actinide series; atomic number 89; atomic weight 227 (most stable isotope); use: radioactive tracer (225 isotope). 4, record 2, English, - actinium
Record 2, French
Record 2, Domaine(s)
- Chimie
- Tiroir - Commission canadienne de sûreté nucléaire
- Physique atomique
Record 2, Main entry term, French
- actinium
1, record 2, French, actinium
correct, masculine noun
Record 2, Abbreviations, French
- Ac 2, record 2, French, Ac
correct
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Élément radioactif faisant partie du groupe des actinides. 3, record 2, French, - actinium
Record number: 2, Textual support number: 1 OBS
C'est l'un des produits de la désintégration de l'uranium 235. Numéro atomique 89, nombre de masse 227. 3, record 2, French, - actinium
Record number: 2, Textual support number: 2 OBS
On en connaît deux isotopes naturels, Ac 227 et Ac 228, et 22 isotopes artificiels de masse atomique comprise entre 209 et 232. 4, record 2, French, - actinium
Record number: 2, Textual support number: 3 OBS
Nombre de masse 227, de poids atomique chimique 227,035. 5, record 2, French, - actinium
Record 2, Spanish
Record 2, Campo(s) temático(s)
- Química
- Compartimiento - Comisión Canadiense de Seguridad Nuclear
- Física atómica
Record 2, Main entry term, Spanish
- actinio
1, record 2, Spanish, actinio
correct, masculine noun
Record 2, Abbreviations, Spanish
- Ac 2, record 2, Spanish, Ac
correct
Record 2, Synonyms, Spanish
Record 2, Textual support, Spanish
Record number: 2, Textual support number: 1 DEF
Elemento químico radiactivo, de símbolo Ac, número atómico 89, y configuración electrónica(Rn) 6d17s2, con 11 nucleidos, ninguno estable. La masa atómica del isótopo menos inestable es 227. 0278. Es elemento metálico. 3, record 2, Spanish, - actinio
Record 3 - internal organization data 2010-06-07
Record 3, English
Record 3, Subject field(s)
- Chemical Elements and Compounds
- Nuclear Physics
Universal entry(ies) Record 3
Record 3, Main entry term, English
- americium
1, record 3, English, americium
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
A radioactive metallic element produced by bombardment of plutonium with high-energy neutrons. 2, record 3, English, - americium
Record number: 3, Textual support number: 2 DEF
A synthetic radioactive element of atomic number 95, a member of the actinide series. 3, record 3, English, - americium
Record number: 3, Textual support number: 1 OBS
Atomic weight 241; 14 isotopes of widely varying half-life. ... Derivation: Multiple neutron capture in plutonium in nuclear reactor, plutonium isotopes yield Am 241 and Am 243 on beta decay. ... Hazard: A radioactive poison. Use: Gamma radiography, radiochemical research, diagnostic aid, electronic devices. 3, record 3, English, - americium
Record 3, French
Record 3, Domaine(s)
- Éléments et composés chimiques
- Physique nucléaire
Entrée(s) universelle(s) Record 3
Record 3, Main entry term, French
- américium
1, record 3, French, am%C3%A9ricium
correct, masculine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 DEF
Nom donné à l'élément chimique de numéro atomique 95, qui suit le plutonium dans la série des corps transuraniens. 2, record 3, French, - am%C3%A9ricium
Record number: 3, Textual support number: 1 CONT
L'américium, qui n'existe pas dans la nature, a été obtenu en 1945 par G. T. Seaborg et ses collaborateurs par bombardement de l'uranium au moyen de particules alpha. [...] L'américium est l'un des principaux déchets nucléaires. 2, record 3, French, - am%C3%A9ricium
Record 3, Spanish
Record 3, Campo(s) temático(s)
- Elementos y compuestos químicos
- Física nuclear
Entrada(s) universal(es) Record 3
Record 3, Main entry term, Spanish
- americio
1, record 3, Spanish, americio
correct, masculine noun
Record 3, Abbreviations, Spanish
Record 3, Synonyms, Spanish
Record 3, Textual support, Spanish
Record number: 3, Textual support number: 1 DEF
Elemento químico artificial, radiactivo, de símbolo Am, número atómico 95, masa atómica del isótopo menos inestable 243 y configuración electrónica(Rn) 5f76s2, con 13 nucleidos, ninguno estable. Forma cristales metálicos de estructura compacta compleja, cúbica centrada en las caras y compacta mixta. Pertenece a la serie de los actínidos. 2, record 3, Spanish, - americio
Record number: 3, Textual support number: 1 OBS
[El americio] es un transuránico, inexistente en la naturaleza, que se obtiene artificialmente bombardeando el uranio con partículas alfa para transmutarlo en plutonio 241. Éste, que es inestable, emite espontáneamente una partícula beta y se convierte en americio. 3, record 3, Spanish, - americio
Record 4 - internal organization data 2010-04-19
Record 4, English
Record 4, Subject field(s)
- Chemistry
- Atmospheric Physics
- Radioactive Contamination
Record 4, Main entry term, English
- radon
1, record 4, English, radon
correct
Record 4, Abbreviations, English
- Rn 2, record 4, English, Rn
correct
Record 4, Synonyms, English
- radon gas 3, record 4, English, radon%20gas
correct
- radium emanation 4, record 4, English, radium%20emanation
correct, obsolete
- emanation 5, record 4, English, emanation
correct, obsolete
- Em 5, record 4, English, Em
correct, obsolete
- Em 5, record 4, English, Em
Record 4, Textual support, English
Record number: 4, Textual support number: 1 DEF
A gas emitted by radioactive material in the Earth's crust and forming a minute constituent of the air near the ground. 6, record 4, English, - radon
Record number: 4, Textual support number: 1 CONT
Radon [is a] highly radioactive inert gas occurring in nature as radon-222, a decay daughter in the radioactive disintegration of uranium 238. It is an alpha particle emitter, having a half-life of 3.8 days and is a considerable hazard to those engaged in uranium mining, as its decay daughters are, too, radioactive. 7, record 4, English, - radon
Record number: 4, Textual support number: 2 CONT
Radon ... in group O (inert gases) of the periodic table formed by the disintegration of radium. 2, record 4, English, - radon
Record 4, French
Record 4, Domaine(s)
- Chimie
- Physique de l'atmosphère
- Pollution par radioactivité
Record 4, Main entry term, French
- radon
1, record 4, French, radon
correct, masculine noun
Record 4, Abbreviations, French
- Rn 2, record 4, French, Rn
correct
Record 4, Synonyms, French
- émanation du radium 3, record 4, French, %C3%A9manation%20du%20radium
correct, feminine noun, obsolete
- émanation 4, record 4, French, %C3%A9manation
correct, see observation, feminine noun, obsolete
Record 4, Textual support, French
Record number: 4, Textual support number: 1 DEF
Gaz émis par des corps radioactifs de la croûte terrestre qui existe en quantité infime dans l'air près du sol. 5, record 4, French, - radon
Record number: 4, Textual support number: 1 CONT
Le radon [...] fut découvert en 1900 par Dorn qui l'appela «émanation du radium». En 1908-1910, Ramsay et Whytlaw-Gray isolèrent cet élément et découvrirent qu'il constituait le plus lourd des gaz connus. Il est inerte chimiquement et occupe la dernière place du groupe O de la classification périodique. 3, record 4, French, - radon
Record number: 4, Textual support number: 1 OBS
radon : gaz rare de symbole Rn, de numéro atomique 86, de nombre de masse 222, de période 3,825 j. 6, record 4, French, - radon
Record number: 4, Textual support number: 2 OBS
Le terme «émanation» désigne les gaz radioactifs produits par la désintégration de certaines substances radioactives. Ce sont les trois gaz du radon de nombres de masse 222, 219 et 220. Ce terme est tombé en désuétude. 7, record 4, French, - radon
Record 4, Spanish
Record 4, Campo(s) temático(s)
- Química
- Física de la atmósfera
- Contaminación por radioactividad
Record 4, Main entry term, Spanish
- radón
1, record 4, Spanish, rad%C3%B3n
correct, masculine noun
Record 4, Abbreviations, Spanish
- Rn 2, record 4, Spanish, Rn
correct
Record 4, Synonyms, Spanish
- gas radón 3, record 4, Spanish, gas%20rad%C3%B3n
correct, masculine noun
Record 4, Textual support, Spanish
Record number: 4, Textual support number: 1 DEF
Elemento químico artificial, radiactivo, de símbolo Rn, masa atómica del isótopo menos inestable 222 [...] Elemento monoatómico del grupo de los gases inertes. 4, record 4, Spanish, - rad%C3%B3n
Record 5 - external organization data 2003-10-17
Record 5, English
Record 5, Subject field(s)
- Chemistry
- Geochemistry
- Compartment - Canadian Nuclear Safety Commission
Record 5, Main entry term, English
- radium
1, record 5, English, radium
correct
Record 5, Abbreviations, English
- Ra 2, record 5, English, Ra
correct
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 DEF
A radioactive metallic element in group II of the periodic system ... 2, record 5, English, - radium
Record number: 5, Textual support number: 1 OBS
The metal is silvery-white and resembles barium in its chemical properties. It occurs in pitchblende, in carnotite, and in other uranium minerals and it is separated from these minerals to obtain the radium salts of commerce. 2, record 5, English, - radium
Record 5, French
Record 5, Domaine(s)
- Chimie
- Géochimie
- Tiroir - Commission canadienne de sûreté nucléaire
Record 5, Main entry term, French
- radium
1, record 5, French, radium
correct, masculine noun
Record 5, Abbreviations, French
- Ra 2, record 5, French, Ra
correct
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 DEF
Métal alcalino-terreux très rare, radioactif et se désintégrant avec une période de 1620 ans. 3, record 5, French, - radium
Record number: 5, Textual support number: 1 OBS
On le rencontre le plus souvent dans les pechblendes. Élément de numéro atomique 88; masse atomique 226,05. 3, record 5, French, - radium
Record 5, Spanish
Record 5, Campo(s) temático(s)
- Química
- Geoquímica
- Compartimiento - Comisión Canadiense de Seguridad Nuclear
Record 5, Main entry term, Spanish
- radio
1, record 5, Spanish, radio
correct, masculine noun
Record 5, Abbreviations, Spanish
- Ra 2, record 5, Spanish, Ra
correct
Record 5, Synonyms, Spanish
Record 5, Textual support, Spanish
Record number: 5, Textual support number: 1 DEF
Elemento químico radiactivo de símbolo Ra, número atómico 88, configuración electrónica(Rn) 7s², con 16 nucleidos, ninguno de los cuales es estable. La masa del isótopo menos inestable es 226. 02. Pertenece al grupo de los elementos alcalinotérreos. 3, record 5, Spanish, - radio
Record 6 - external organization data 2002-09-04
Record 6, English
Record 6, Subject field(s)
- Chemistry
- Compartment - Canadian Nuclear Safety Commission
Record 6, Main entry term, English
- astatine
1, record 6, English, astatine
correct
Record 6, Abbreviations, English
- At 2, record 6, English, At
correct
Record 6, Synonyms, English
- astate 3, record 6, English, astate
Record 6, Textual support, English
Record number: 6, Textual support number: 1 DEF
A radioactive element belonging to the halogens discovered by bombarding bismuth with helium nuclei and also formed by radioactive decay. 4, record 6, English, - astatine
Record number: 6, Textual support number: 2 DEF
Nonmetallic element of atomic number 85. Group VIIA of Periodic Table; atomic weight 210. Heaviest member of the halogen family. It has 20 isotopes, all radioactive; derived by alpha bombardment of bismuth. ... Astatine occurs in nature to the extent of about one ounce in entire earth's crust. Like iodine, it concentrates in the thyroid gland. Its use in medicine is still experimental. 5, record 6, English, - astatine
Record 6, French
Record 6, Domaine(s)
- Chimie
- Tiroir - Commission canadienne de sûreté nucléaire
Record 6, Main entry term, French
- astate
1, record 6, French, astate
correct, masculine noun
Record 6, Abbreviations, French
- At 2, record 6, French, At
correct
Record 6, Synonyms, French
- astatine 3, record 6, French, astatine
correct, masculine noun, less frequent
Record 6, Textual support, French
Record number: 6, Textual support number: 1 DEF
Corps simple, le cinquième et le plus lourd du groupe des halogènes, de symbole At, de masse atomique 210, de numéro atomique 85 (ancien ekaiode), préparé au cyclotron en bombardant une cible d'oxyde de bismuth avec des hélions de 25 MeV. 4, record 6, French, - astate
Record number: 6, Textual support number: 1 CONT
L'astate existe en quantités infinitésimales comme produit de désintégration radioactive naturelle de l'uranium. L'astate 211 est obtenu par bombardement d'une cible en bismuth refroidie, par des particules [alpha] de haute énergie. On évapore de la cible l'astate formé à basse pression. 4, record 6, French, - astate
Record number: 6, Textual support number: 1 OBS
Il semble [que la chimie de l'astate] s'apparente à celle de l'iode [...] On peut considérer ainsi qu'il fait partie de la famille des halogènes dans laquelle il était prévu sous le nom provisoire d'éka-iode. D'autres isotopes sont connus, mais aucun d'eux n'est stable (d'où le nom d'astate [du grec «astatos», qui signifie instable] qui a été donné à ce corps). 4, record 6, French, - astate
Record 6, Spanish
Record 6, Campo(s) temático(s)
- Química
- Compartimiento - Comisión Canadiense de Seguridad Nuclear
Record 6, Main entry term, Spanish
- ástato
1, record 6, Spanish, %C3%A1stato
correct, masculine noun
Record 6, Abbreviations, Spanish
- At 2, record 6, Spanish, At
correct
Record 6, Synonyms, Spanish
- astatino 3, record 6, Spanish, astatino
masculine noun
- astatina 4, record 6, Spanish, astatina
feminine noun
Record 6, Textual support, Spanish
Record number: 6, Textual support number: 1 DEF
Elemento químico artificial, radiactivo, de símbolo At, número atómico 85, masa del isótopo menos inestable 210 y configuración electrónica(Xe) 4f145d106s²6p5, con 29 nucleidos, ninguno estable. 2, record 6, Spanish, - %C3%A1stato
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