Ytterbium

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

Contents

General Information about Ytterbium

Regular nameYtterbiumChemical symbolYbOther namesHistorical namesName meaning, originDiscovery (year)OccurencePosition in the PSEGroup membership

Atomar Properties of Ytterbium

Atomic number Z70 = number of protonsStandard Atomic Weight173.045 (10)

Electron configuration of Ytterbium

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			2

Shorthand electron configuration of Ytterbium: [Xe] 4f¹⁴ 6s² .

Ionization Energies of Ytterbium

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 Ytterbium atom.

IE1	IE2	IE3	IE4
6.25416	12.176	23.05	43.56

Isotopic Data of Ytterbium

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

Chemistry of Ytterbium

Oxidation states+ 3Electronegativity1.1 (Pauling original)
1.10 (Pauling)Electron affinity-0.02 eV
-1.93 kJ mol^-1

Standard Electrode Potential

E⁰ (V)	Symbol	N_ox	Name Ox. Name Red.	Ox. Red.	e^-
-2.76	Yb	+ II 0	Ytterbium(II) cation Ytterbium	Yb²⁺ ⇄ Yb	+ 2 e^-
-2.19	Yb	+ III 0	Ytterbium(III) cation Ytterbium	Yb³⁺ ⇄ Yb	+ 3 e^-
-1.05	Yb	+ III + II	Ytterbium(III) cation Ytterbium(II) cation	Yb³⁺ ⇄ Yb²⁺	+ e^-

Material and Physical Properties

Melting point824 °CEnthalpy of fusion (molar)7.66 kJ mol^-1Boiling point1196 °CEnthalpy of vaporization159 kJ mol^-1Density6.973 g cm^-3 (25 °C)

External Data, Identifiers

CAS registry number7440-64-4InChI =1S/YbInChIKeyNAWDYIZEMPQZHO-UHFFFAOYSA-NPubChem ID23992

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Last update: 2022-12-12

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