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Plutonium

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


Contents


Plutonium

 

General Information about Plutonium

Regular namePlutoniumChemical symbolPuOther namesHistorical namesName meaning, originDiscovery (year)OccurencePosition in the PSEGroup membership

 

Atomar Properties of Plutonium

Atomic number Z94 = number of protonsStandard Atomic Weight244.064205302

 

Electron configuration of Plutonium

1s2s2p3s3p3d4s4p4d4f5s5p5d5f6s6p6d6f7s7p
226261026101426106262

Shorthand electron configuration of Plutonium: [Rn] 5f6 7s2 .

 

Ionization Energies of Plutonium

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 Plutonium atom.

IE1IE2
6.026011.2

 

Isotopic Data of Plutonium

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

 

Chemistry of Plutonium

 

Oxidation states+ 4Electronegativity1.3 (Pauling original)
1.28 (Pauling)
Electron affinity-0.5 eV
-48.33 kJ mol-1

 

Standard Electrode Potential

E0 (V)SymbolNoxName Ox.
Name Red.
Ox.
Red.
e-
-2.031Pu+III
0
Plutonium(III) cation
Plutonium
Pu3+
⇄ Pu (s)
+ 3 e-
1.006Pu+ IV
+ III
Plutonium(IV) cation
Plutonium(III) cation
Pu4+
⇄ Pu3+
+ e-
1.099Pu+ V
+ IV
Plutonium(V) cation
Plutonium(IV) cation
Pu5+
⇄ Pu4+
+ e-

 

Material and Physical Properties

Melting point639.4 °CEnthalpy of fusion (molar)2.82 kJ mol-1Boiling point3228 °CEnthalpy of vaporization343.5 kJ mol-1Density19.816 g cm-3

 

External Data, Identifiers

CAS registry number7440-07-5InChI =1S/PuInChIKeyOYEHPCDNVJXUIW-UHFFFAOYSA-NPubChem ID23940

 


More Chemistry

isotopes

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Last update: 2022-12-12


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