Praseodymium( Pr) :

Define: Praseodymium is inner transition metal which is place in 2nd number at lanthanide series . It is rare earth metal. It is stable metal .it show malleable, ductile  properties. Praseodymium show similar chemical properties like Gadolinium element.

Praseodymium is found in earth curst in the form of monazite and bastnaesiteminerals.  It is made by process of reduction of anhydrous chloride with calcium .

Discovery : Praseodymium is discovered in 1885 by scientist Carl Auer Von Welsbach

Origin of name :. The name is derived from Greek word ‘ prasiosdidymos’ . Meaning of prasiosis  green and didymos’ meaning is twin .

Physical properties :

Atomic symbol: Praseodymium is denoted by symbol ‘ Pr

Atomic number : atomic number of praseodymium is 59

In praseodymium 59 proton and 59 Electron is present

Atomic weight/ mass: Atomic weight of praseodymium is 140.9 Amu

In praseodymium 59 proton and 82 neutron is present

Position : praseodymium is place in periodic table at 3rd column ( group ) and 6th period ( row )

Block : praseodymium is place in f block

Outer shell electron present in f orbit

Colour : praseodymium show yellowish colour

Nature : praseodymium present in nature at solid form

Boiling point : boiling point of praseodymium is 3520 0C

Melting point :Melting point of praseodymium is 931 0C


Praseodymium show only 1 stable isotope

141Pr : Atomic weight of this isotope is 140.9 Amu

In this isotope 59 proton,59 electron and 82 neutron is present

It is present 100% in nature

Praseodymium also show Radio active isotope

Chemical properties :

Electronic configuration:

Electronic configuration of praseodymium is [ Xe ] 4f3 6S2

Electronic configuration in concert of shell is 2,8,18,21,8,2

Electronic structure

Valency :valency of praseodymium is 3

Atomic radius : Atomic radius of praseodymium is 247 pm


It’s salt form is use make colour glass , enamel and glazes

Praseodymium is use for making glasses for welding purpose

Any Lanthanide metal along with praseodymium use to make carbon arc electrode

It’s alloy form is use for making permanent magnet

Praseodymium is use in projection of lighting in the major motion picture industry

Praseodymium is also use to make porcelain

It is also use in air craft

It is mainly use to make hybrid cars

Praseodymium with nickel metal hybrid is use to make rechargeable batteries for hybrid auto Mobile


Question and Answer:

Q1. Define Praseodymium

Q2. Who discovered Praseodymium?

Q2. Physical properties of Praseodymium

Q4. Write Atomic Symbol of Praseodymium.

Q5. Write the Atomic number of Praseodymium.

Q6. On which block Praseodymium element is present?

Q7. What is the color of Praseodymium?

Q8. What is the Boiling point of Praseodymium?

Q9. What is the Melting point of Praseodymium?

Q10. Write the Isotopes of Praseodymium.

Q11. Show Electronic configuration of Praseodymium.

Q12. Write Electronic Structure of Praseodymium.

Q13. What is the Valency of Praseodymium?

Q14. Write the uses of Praseodymium element.

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