Gadolinium
Chemical element
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Gadolinium is a chemical element; it has symbol Gd and atomic number 64. Gadolinium is a silvery-white metal when oxidation is removed. It is a malleable and ductile rare-earth element. Gadolinium reacts with atmospheric oxygen or moisture slowly... Wikipedia
Symbol: Gd
Electron configuration: Xe 4f7 5d1 6s2
Atomic number: 64
Atomic mass: 157.25 u
Discoverers: Jean Charles Galissard de Marignac and Paul-Émile Lecoq de Boisbaudran
Discovered: 1880
Melting point: 2,393°F (1,312°C)