Erbium

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

Content

General data

Atomar properties

Electron configutation

General Information about Erbium

Regular nameErbiumChemical symbolErOther namesSystematic nameHistorical namesName meaning, originDiscovery (year)OccurencePosition in the PSEGroup membership

Atomar Properties of Erbium

Atomic number Z68 = number of protonsStandard Atomic Weight167.259 (3)

Electron configuration of Erbium

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	12	2	6			2

Abbreviated form: [Xe] 4f¹² 6s² .

Ionization Energies of Erbium

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

IE1	IE2	IE3	IE4
6.1077	11.93	22.74	42.7

Isotopic Data of Erbium

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

Chemistry of Erbium

Electronegativity1.1 (Pauling original)
1.24 (Pauling)Electron affinity0.312 eV
30.1 kJ mol^-1

Standard Electrode Potential

E⁰ (V)	Symbol	N_ox	Name Ox. Name Red.	Ox. Red.	e^-
-2.32	Er	+ III 0	Erbium(III) cation Erbium	Er³⁺ ⇄ Er (s)	+ 3 e^-

Material and Physical Properties

Melting point1529 °CEnthalpy of fusion (molar)19.90 kJ mol^-1Boiling point2868 °CEnthalpy of vaporization292.2 kJ mol^-1Density9.066 g cm^-3

External Data, Identifiers

CAS registry number7440-52-0InChI =1S/ErInChIKeyUYAHIZSMUZPPFV-UHFFFAOYSA-NPubChem ID23980

More Chemistry

isotopes

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Last update: 2022-12-12

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