Praseodymium

 PRASEODYMIUM

**Color**: Silvery-white

**Classification**: Praseodymium is a lanthanide and rare earth metal

**State**:solid

**First identified**:1885 By Carl Auer von Welsbach

**Boiling point:** 3510 oC


 * Atomic Number:** 59


 * Atomic Mass:**140.90765 amu


 * Number of Protons/Electrons:** 59


 * Number of Neutrons:** 82


 * Metal/Metalloid/Non-metal:** metal


 * 1. what is it used for:** Praseodymium is used in high-intensity permanent magnets, which are essential in electric motors and generators used in hybrid cars and wind turbines.


 * 2.** Praseodymium is used in nickel metal hydride (NiMH) rechargeable batteries for hybrid automobiles. The negative electrode (cathode) in NiMH batteries is a mixture of metal hydrides – typically a rare earth misch metal hydride containing praseodymium, neodymium, lanthanum and cerium.


 * 3.** The metal is used as an alloying agent with magnesium creating a high-strength metal for aircraft engines.


 * 4.** Praseodymium is used to make specialized yellow glass goggles for glass blowers and welders.


 * 5.** Flame lighter flints use misch metal (a rare earth alloy) containing praseodymium to produce sparks by friction.

 Cost, pure: $470 per 100g

__//**BY ISAAC FISHLOCK**//__