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Good Book origin : Praseodymium comes from the Greek wordprasios , intend green , anddidymos , mean twin . The name combined means green Twin Falls .
Discovery : Swedish chemist Carl Gustav Mosander in 1841 extracted the rare earth oxide residual he call up didymium from a residue he call " lantana . " In 1885 , Austrian druggist Baron Carl Auer von Welsbach separated didymium into two salt of different colors , which he named praseodymium , named for its green color , and atomic number 60 .
Electron configuration and elemental properties of praseodymium.
property of praseodymium
Praseodymium is a silveryrare - worldly concern metalthat is delicate , malleable and ductile . It is one of the lanthanides . [ SeePeriodic board of the Elements ]
Although Pr is more resistive to corrosion in air travel than some other rare - ground metals , it can develop a light-green oxide finishing when expose to air .
A 1.5-gram piece of ultrapure praseodymium in a vial of argon, about 0.5 by 1 cm.
Sources ofpraseodymium
Praseodymium can be regain in a variety of minerals . Larger amount of the element are found in monazite and bastnasite . New technique , such as ion - exchange and solvent extraction , have led to easy isolation of many rare - terra firma elements . Praseodymium can also be obtained through Ca reduction of the anhydrous chloride of fluoride .
use ofpraseodymium
Praseodymium is commonly used as an alloying factor withmagnesiumto create high - strength metals used in aircraft engine . It ’s also a element of mischmetal , a textile that is used to make flints for lighters , and in carbon copy arc lights , used in the apparent movement picture industry for studio lighting and projector Light . The component is often added to fibre optical cables as a dope agent to help amplify a sign .
Pr salts can give glasses and enamels a bright , genuine yellow coloration . Didymium glass , which contains praseodymium , is a colorant for welders and deoxyephedrine cetacean mammal ’s rubber goggles .
( Source : Los Alamos National Laboratory )
