Gadolinium. Sample of the rare earth metal Gadolinium (Gd). The rare earth metals,or rare earth elements,are a set of seventeen chemical elements in the periodic table,specifically the fifteen lanthanides plus scandium and yttrium. Gadolinium is a soft silvery-white metallic element. It is only found in salt form in nature. It is used to shield nuclear reactors and as a contrast medium for MRI (magnetic resonance imaging) scans | |
Licence : | Droits gérés |
Crédit: | Science Photo Library |
Taille de l’image : | 4273 px × 4273 px |
Model Release : | Non requis |
Restrictions : | - |