Berkelium

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

Contents

General Information about Berkelium

Regular nameBerkeliumChemical symbolBkOther namesHistorical namesName meaning, originDiscovery (year)OccurencePosition in the PSEGroup membership

Atomar Properties of Berkelium

Atomic number Z97 = number of protonsStandard Atomic Weight247.070308541

Electron configuration of Berkelium

1s	2s	2p	3s	3p	3d	4s	4p	4d	4f	5s	5p	5d	5f	6s	6p	6d	6f	7s	7p
2	2	6	2	6	10	2	6	10	14	2	6	10	9	2	6			2

Shorthand electron configuration of Berkelium: [Rn] 5f⁹ 7s² .

Ionization Energies of Berkelium

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 Berkelium atom.

IE1
6.1979

Isotopic Data of Berkelium

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

Chemistry of Berkelium

Oxidation states+ 3Electronegativity1.3 (Pauling original)
1.30 (Pauling)Electron affinity-1.72 eV
-165.24 kJ mol^-1

Standard Electrode Potential

E⁰ (V)	Symbol	N_ox	Name Ox. Name Red.	Ox. Red.	e^-
-2.01	Bk	+III 0	Berkelium(III) cation Berkelium	Bk³⁺ ⇄ Bk (s)	+ 3 e^-

Material and Physical Properties

Melting point986 °CEnthalpy of fusion (molar)7.92 kJ mol^-1Boiling point2627 °CDensity14.78 g cm^-3 (α)

External Data, Identifiers

CAS registry number7440-40-6InChI =1S/BkInChIKeyPWVKJRSRVJTHTR-UHFFFAOYSA-NPubChem ID23971

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isotopes

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Last update: 2022-12-05

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