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Palladium

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


Contents


Palladium

 

General Information about Palladium

Regular namePalladiumChemical symbolPdOther namesHistorical namesName meaning, originDiscovery (year)OccurencePosition in the PSEGroup membership

 

Atomar Properties of Palladium

Atomic number Z46 = number of protonsStandard Atomic Weight106.42 (1)

 

Electron configuration of Palladium

1s2s2p3s3p3d4s4p4d4f5s5p5d5f6s6p6d6f7s7p
22626102610..

Shorthand electron configuration of Palladium: [Kr] 4d10 .

 

Ionization Energies of Palladium

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 Palladium atom.

IE1IE2IE3
8.336919.4332.93

 

Isotopic Data of Palladium

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

 

Chemistry of Palladium

 

Oxidation states+2Electronegativity2.2 (Pauling original)
2.20 (Pauling)
1.59 (Allen)
3.5727 eV (Gosh Gupta)
4.45 eV (Pearson)
Electron affinity0.562 14(12) eV
54.24(2) kJ mol-1

 

Standard Electrode Potential

E0 (V)SymbolNoxName Ox.
Name Red.
Ox.
Red.
e-
0.07Pd+ II
0
Palladium(II) hydroxide
Palladium
Pd(OH)2
⇄ Pd (s) + 2 OH-
+ 2 e-
0.591Pd+ II
0
Tetrachloropalladate(II)
Palladium
[PdCl4]2-
⇄ Pd (s) + 4 Cl-
+ 2 e-
0.951Pd+ II
0
Palladium(II) cation
Palladium
Pd2+
⇄ Pd (s)
+ 2 e-
1.288Pd+ IV
+ II
Hexachloropalladate(IV)
Palladium
[PdCl6]2-
⇄ [PdCl4]2- + 2 Cl-
+ 2 e-

 

Material and Physical Properties

Melting point1554.8 °CEnthalpy of fusion (molar)16.74 kJ mol-1Boiling point2963 °CEnthalpy of vaporization393.3 kJ mol-1Density12.023 g cm-3

 

External Data, Identifiers

CAS registry number7440-05-3InChI =1S/PdInChIKeyKDLHZDBZIXYQEI-UHFFFAOYSA-NPubChem ID23938

 


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isotopes

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Last update: 2022-12-12


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