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Praseodymium

Chemical, physical and material properties and data of the chemical element Praseodymium.


Contents


Praseodymium

 

General Information about Praseodymium

Regular namePraseodymiumChemical symbolPrOther namesHistorical namesName meaning, originDiscovery (year)OccurencePosition in the PSEGroup membership

 

Atomar Properties of Praseodymium

Atomic number Z59 = number of protonsStandard Atomic Weight140.90766 (1)

 

Electron configuration of Praseodymium

1s2s2p3s3p3d4s4p4d4f5s5p5d5f6s6p6d6f7s7p
226261026103262

Shorthand electron configuration of Praseodymium: [Xe] 4f3 6s2 .

 

Ionization Energies of Praseodymium

The following table lists the ionization energies IE (ionization potentials); the IE is the energy required in electron volt (eV) per atom to separate a given electron from an Praseodymium atom.

IE1IE2IE3IE4IE5
5.47310.5521.62438.9857.53

 

Isotopic Data of Praseodymium

An overview of the nuclides as well as the isotopic data and properties are listed on the following page: Praseodymium isotopes.

 

Chemistry of Praseodymium

 

Electronegativity1.1 (Pauling original)
1.13 (Pauling)
Electron affinity0.962(24) eV
93(3) kJ mol-1

 

Standard Electrode Potential

E0 (V)SymbolNoxName Ox.
Name Red.
Ox.
Red.
e-
-3.1Pr+ III
+ II
Praseodymium(III) cation
Praseodymium(II) cation
Pr3+
⇄ Pr2+
+ e-
-2.353Pr+ III
0
Praseodymium(III) cation
Praseodymium
Pr3+
⇄ Pr (s)
+ 3 e-
-2.0Pr+ II
0
Praseodymium(II) cation
Praseodymium
Pr2+
⇄ Pr (s)
+ 2 e-
3.2Pr+ IV
+ III
Praseodymium(IV) cation
Praseodymium(III) cation
Pr4+
⇄ Pr3+
+ e-

 

Material and Physical Properties

Melting point931 °CEnthalpy of fusion (molar)6.89 kJ mol-1Boiling point3520 °CEnthalpy of vaporization332.6 kJ mol-1Density6.77 g cm-3

 

External Data, Identifiers

CAS registry number7440-10-0InChI =1S/PrInChIKeyPUDIUYLPXJFUGB-UHFFFAOYSA-NPubChem ID23942

 


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isotopes

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Last update: 2022-12-12


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