PRASEODYMIUM

Praseodymium is a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical properties. It is too reactive to be found in native form, and pure praseodymium metal slowly develops a green oxide coating when exposed to air.



Symbol: Pr
Electron configuration: [Xe] 4f36s2
Atomic number: 59
Atomic mass: 140.90765 u
Discovered: 1885