Erbium
Chemical, physical and material properties and data of the chemical element Erbium.
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 | Nox | 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
Last update: 2022-12-12
Perma link: https://www.chemlin.org/chemical-elements/erbium.php
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