Neodymium

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

Contents

General Information about Neodymium

Regular nameNeodymiumChemical symbolNdOther namesHistorical namesName meaning, originDiscovery (year)OccurencePosition in the PSEGroup membership

Atomar Properties of Neodymium

Atomic number Z60 = number of protonsStandard Atomic Weight144.242 (3)

Electron configuration of Neodymium

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	4	2	6			2

Shorthand electron configuration of Neodymium: [Xe] 4f⁴ 6s² .

Ionization Energies of Neodymium

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 Neodymium atom.

IE1	IE2	IE3	IE4
5.5250	10.72	22.1	40.4

Isotopic Data of Neodymium

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

Chemistry of Neodymium

Oxidation states+3Electronegativity1.1 (Pauling original)
1.14 (Pauling)Electron affinity1.916 eV
184.87 kJ mol^-1

Standard Electrode Potential

E⁰ (V)	Symbol	N_ox	Name Ox. Name Red.	Ox. Red.	e^-
-2.7	Nd	+III + II	Neodymium(III) cation Neodymium(II) cation	Nd³⁺ ⇄ Nd²⁺	+ e^-
-2.323	Nd	+III 0	Neodymium(III) cation Neodymium	Nd³⁺ ⇄ Nd (s)	+ 3 e^-
-2.1	Nd	+II 0	Neodymium(II) cation Neodymium	Nd²⁺ ⇄ Nd (s)	+ 2 e^-

Material and Physical Properties

Melting point1016 °CEnthalpy of fusion (molar)7.14 kJ mol^-1Boiling point3074 °CEnthalpy of vaporization283.7 kJ mol^-1Density7.01 g cm^-3

External Data, Identifiers

CAS registry number7440-00-8InChI =1S/NdInChIKeyQEFYFXOXNSNQGX-UHFFFAOYSA-NPubChem ID23934

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Last update: 2022-11-25

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