Dubnium

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

Contents

General Information about Dubnium

Regular nameDubniumChemical symbolDbOther namesHistorical namesName meaning, originDiscovery (year)OccurencePosition in the PSEGroup membership

Atomar Properties of Dubnium

Atomic number Z105 = number of protonsStandard Atomic Weight268.125607

Electron configuration of Dubnium

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	14	2	6	3		2

Shorthand electron configuration of Dubnium: [Rn] 5f¹⁴ 6d³ 7s² .

Ionization Energies of Dubnium

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 Dubnium atom.

IE1	IE2	IE3	IE4	IE5
6.89	16.03	24.65	34.19	44.62

Isotopic Data of Dubnium

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

Chemistry of Dubnium

Oxidation states+ 5. (+3. +4)

Material and Physical Properties

Density29.3 g cm^-3 (20 °C)

External Data, Identifiers

CAS registry number53850-35-4InChI =1S/DbInChIKeyPUKKTGLVJQVIOF-UHFFFAOYSA-NPubChem ID56951718

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isotopes

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Last update: 2022-12-12

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