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FE 3 [1 record]

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Alphabetical list of terms

Record 1 2010-11-22

English

Subject field(s)
  • Iron and Manganese Mining
  • Geochemistry
  • Chemistry
  • Nutritive Elements (Biological Sciences)
Universal entry(ies)
Fe3+
symbol, see observation
Fe+3
symbol, see observation
Fe+++
symbol, see observation
Fe(III)
symbol, see observation
CONT

This spinel mineral [chromite] can show a considerable variation in composition with ... ferric iron substituting for the chromium.

CONT

... iron, Fe, and manganese ... usually occur in groundwater in solutions as ferrous, Fe2+, and manganous, Mn2+, ions. When exposed to air, they form the insoluble ferric, Fe3+, and manganic ... forms, making the water turbid ...

OBS

Symbol: Fe3+ or Fe+3 or Fe+++ or Fe(III)

French

Domaine(s)
  • Mines de fer et de manganèse
  • Géochimie
  • Chimie
  • Éléments nutritifs (Sciences biologiques)
Entrée(s) universelle(s)
Fe3+
symbol, see observation
Fe+3
symbol, see observation
Fe+++
symbol, see observation
Fe(III)
symbol, see observation
CONT

Si l'on considère les deux types d'ions Fe++ et Fe+++ on constate que [...] le fer ferreux bivalent est relativement plus abondant que le fer ferrique trivalent [...]

CONT

[...] la formation de ces gisements de fer rubané cessa brusquement il y a environ 1,8 milliard d'années, lorsque l'atmosphère se chargea d'oxygène. La mobilité du fer diminua à mesure que le fer ferreux s'oxydait en fer ferrique, moins soluble.

CONT

La structure électronique du fer, des ions ferreux (Fe2+) et ferriques (Fe3+) met en évidence des électrons de spin non appariés [...]

OBS

Símbolo : Fe3+ ou Fe+3 ou Fe+++ ou Fe(III)

Spanish

Campo(s) temático(s)
  • Minas de hierro y de manganeso
  • Geoquímica
  • Química
  • Elementos nutritivos (Ciencias biológicas)
Entrada(s) universal(es)
Fe3+
symbol, see observation
Fe+3
symbol, see observation
Fe+++
symbol, see observation
Fe(III)
symbol, see observation
OBS

Según sean sus valencias, el hierro da dos familias de compuestos: compuestos ferrosos (cuyas disoluciones suelen ser verdes), si el hierro es bivalente; compuestos férricos, de color entre amarillo y rojo, si es trivalente.

OBS

Symbol: Fe3+ o Fe+3 o Fe+++ o Fe(III)

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