Praseodymium is a soft, malleable, ductile, silver-yellow metal.
Praseodymium is a rare-earth metal of the lanthanide series in group IIIb of the periodic table .
When exposed to air it forms a green oxide that does not protect it from further oxidation. Although the pure metal may be prepared by reduction of the chloride, it has few commercial uses. A major use of the metal is in a pyrophoric alloy used in cigarette lighter flints, but it need not be purified for this application. Praseodymium compounds have many uses. The oxide is used in carbon electrodes for arc lighting.