Praseodymium


 * Element Name:** Praseodymium


 * Element Symbol:** Pr


 * Atomic Mass:** 141[[image:Praseodymium.png width="216" height="288" align="right"]]


 * Atomic Number:** 59


 * Protons:** 59


 * Electrons:** 59


 * Discovery:** Carl F. Auer von Welsbach (a German chemist) discovered this in 1885


 * How it was named:** It's Greek, Prasios = green and didymos = twin. "Green Twin"


 * State of Matter:** solid at room temperature


 * Melting Point:** 931°C


 * Boiling Point:** 3520°C


 * Characteristics:** soft, silvery, white, yellowish tinge, grayish white, in the lanthanide group, ductile, malleable


 * Uses:**
 * It's an alloying agent with magnesium to create high strength metals that are used in aircraft engines.
 * Forms the core of carbon arc lights which are used in the motion picture industry for studio lighting and projector lights
 * It's also a component of didymium glass, which is used to make certain types of welder's and blower's goggles
 * It's added to fiber optic cables as a doping agent where it is used as a signal amplifier
 * Praseodymium salts are used to give glasses and enamels a yellow color


 * Interesting Facts:**
 * a component of misch metal
 * used for lighter flints
 * develops a green oxide coating that spalls off when exposed to air
 * somewhat more resistant to corrosion in the air than europium, lanthanum, cerium, or neodymium

media type="youtube" key="IL06CzXF3ns?fs=1" height="307" width="384" align="center"