europium

Gadolinium is a member of the lanthanide group of elements, and is obtained from the same sources as europium (its abundance in the Earth's crust is 7.7 ppm).
Le gadolinium fait partie du groupe des lanthanides et est obtenu à partir des mêmes sources que l'europium (sa quantité dans la croûte terrestre est de 7,7 ppm).
The most reactive member of the lanthanide group of elements and one of the less abundant (2.1 ppm in the Earth's crust), europium is a ductile silvery metal which reacts rapidly with air and water.
Membre le plus réactif du groupe des lanthanides et l'un des moins abondants (2,1 ppm dans la croûte terrestre), l'europium est un métal ductile de couleur argentée qui réagit rapidement à l'air comme à l'eau.
Europium is also used as control rod material in nuclear reactors due to its ability to absorb neutrons.
L'europium est également utilisé comme matériau pour les barres de contrôle dans les réacteurs nucléaires car il peut absorber les neutrons.
Europium is obtained from monazite sand, which is a mixture of phosphates of calcium, thorium, cerium and most other rare earths.
L'europium se trouve dans le sable monazite qui est un mélange de phosphate de calcium, de thorium, de cérium et d'autres terres rares.
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