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7782-49-2 [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 - external organization data 2011-04-05

English

Subject field(s)
  • Chemistry
  • Geochemistry
  • Compartment - Canadian Nuclear Safety Commission
Universal entry(ies)
Se
symbol
7782-49-2
CAS number
DEF

A nonmetallic element in the sixth group of the periodic system [which is] widely distributed in small quantities, usually as selenides of heavy metals [and which resembles] sulfur and tellurium chemically.

OBS

Atomic number: 34.

OBS

selenium: term adopted by Environment Canada; used in the list of pollutants measured in the National Air Pollution Surveillance Network (NAPS).

PHR

Colloidal, elemental selenium.

PHR

Selenium alloy, base, dust, homopolymer, metal powder.

French

Domaine(s)
  • Chimie
  • Géochimie
  • Tiroir - Commission canadienne de sûreté nucléaire
Entrée(s) universelle(s)
Se
symbol
7782-49-2
CAS number
DEF

Métalloïde natif, présentant des analogies avec le soufre [...]

CONT

Le sélénium se présente sous un grand nombre de variétés allotropiques.

OBS

Élément de numéro atomique 34; masse atomique 78,96. Symbole : Se.

OBS

sélénium : terme retenu par Environnement Canada; utilisé dans la liste des polluants mesurés par le Réseau national de surveillance de la pollution atmosphérique (RNSPA).

Spanish

Campo(s) temático(s)
  • Química
  • Geoquímica
  • Compartimiento - Comisión Canadiense de Seguridad Nuclear
Entrada(s) universal(es)
Se
symbol
7782-49-2
CAS number
DEF

Elemento químico de símbolo Se, número atómico 34, masa atómica 78.96[más o menos]3 y configuración electrónica (Ar)3d10 4s²4p4, con 26 nucleidos, 6 de los cuales son estables.

OBS

Se conocen 6 formas distintas: 3, monoclínicas, moleculares, formadas por anillos Se8; otra, metálica, que forma cristales de estructura en cadenas, hexagonal; y el Se rojo, amorfo.

Save record 1

Record 2 1993-01-27

English

Subject field(s)
  • Chemical Elements and Compounds
Universal entry(ies)
7782-49-2
CAS number

French

Domaine(s)
  • Éléments et composés chimiques
Entrée(s) universelle(s)
7782-49-2
CAS number

Spanish

Save record 2

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