Titanium

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

Contents

General Information about Titanium

Regular nameTitaniumChemical symbolTiOther namesHistorical namesName meaning, originDiscovery (year)OccurencePosition in the PSEGroup membership

Atomar Properties of Titanium

Atomic number Z22 = number of protonsStandard Atomic Weight47.867 (1)

Electron configuration of Titanium

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	2	2

Shorthand electron configuration of Titanium: [Ar] 3d² 4s² .

Ionization Energies of Titanium

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 Titanium atom.

IE1	IE2	IE3	IE4	IE5	IE6	IE7	IE8
6.82812	13.5755	27.4919	43.2675	99.30	119.53	140.8	170.4

Isotopic Data of Titanium

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

Chemistry of Titanium

Oxidation states+4Electronegativity1.5 (Pauling original)
1.54 (Pauling)
1.38 (Allen)
3.0040 eV (Gosh Gupta)
3.45 eV (Pearson)Electron affinity0.075 54(5) eV
7.289(5) kJ mol^-1

Standard Electrode Potential

E⁰ (V)	Symbol	N_ox	Name Ox. Name Red.	Ox. Red.	e^-
-1.63	Ti	+ II 0	Titanium(II) cation Titanium	Ti²⁺ ⇄ Ti (s)	+ 2 e^-
-1.37	Ti	+ III 0	Titanium(III) cation Titanium	Ti³⁺ ⇄ Ti (s)	+ 3 e^-
-1.31	Ti	+ II 0	Titanium monoxide Titanium	TiO (s) + 2 H⁺ ⇄ Ti (s) + H₂O	+ 2 e^-
-1.23	Ti	+ III + II	Titanium(III) oxide Titanium monoxide	Ti₂O₃ + 2 H⁺ ⇄ 2 TiO (s) + H₂O	+ 2 e^-
-0.56	Ti	+ IV + III	Titanium dioxide Titanium(III) oxide	2 TiO₂ (s) + 2 H⁺ ⇄ Ti2O3 (s) + H₂O	+ 2 e^-

Material and Physical Properties

Melting point1668 °CEnthalpy of fusion (molar)14.15 kJ mol^-1Boiling point3287 °CEnthalpy of vaporization428.9 kJ mol^-1Density4.506 g cm^-3 (20 °C)

External Data, Identifiers

CAS registry number7440-32-6InChI =1S/TiInChIKeyRTAQQCXQSZGOHL-UHFFFAOYSA-NPubChem ID23963

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isotopes

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Last update: 2022-12-12

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