Tellurium
Chemical, physical and material properties and data of the chemical element Tellurium.
General Information about Tellurium
Regular nameTelluriumChemical symbolTeOther namesSystematic nameHistorical namesName meaning, originDiscovery (year)OccurencePosition in the PSEGroup membership
Atomar Properties of Tellurium
Atomic number Z52 = number of protonsStandard Atomic Weight127.60 (3)
Electron configuration of Tellurium
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 | | 2 | 4 | | | | | | | | |
Abbreviated form: [Kr] 4d10 5s2 5p4 .
Ionization Energies of Tellurium
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 Tellurium atom.
IE1 | IE2 | IE3 | IE4 | IE5 | IE6 | IE7 |
---|
9.0096 | 18.6 | 27.96 | 37.41 | 58.75 | 70.7 | 137 |
Isotopic Data of Tellurium
An overview of the nuclides as well as the isotopic data and properties are listed on the following page: Tellurium isotopes.
Chemistry of Tellurium
Oxidation states-2. +2. +4. +6Electronegativity2.1 (Pauling original)
2.10 (Pauling)
2.158 (Allen)
2.2 (Mulliken)
2.34 (Sanderson)
2.01 (Allred-Rochow)
5.3250 eV (Gosh Gupta)
5.49 eV (Pearson)Electron affinity1.970 875(7) eV
190.161(1) kJ mol-1
Standard Electrode Potential
E0 (V) | Symbol | Nox | Name Ox. Name Red. | Ox. Red. | e- |
---|
-1.143 | Te | 0 - II | Tellurium Telluride Dianion | Te (s) ⇄ Te2- | + 2 e- |
1.02 | Te | + VI + IV | Telluric acid Tellurium dioxide | H6TeO6 (aq) + 2 H+ ⇄ TeO2 (s) + 4 H2O | + 2 e- |
Material and Physical Properties
Melting point449.51 °CEnthalpy of fusion (molar)17.49 kJ mol-1Boiling point988 °CEnthalpy of vaporization50.63 kJ mol-1Density6.24 g cm-3
External Data, Identifiers
CAS registry number13494-80-9InChI =1S/TeInChIKeyPORWMNRCUJJQNO-UHFFFAOYSA-NPubChem ID6327182
Last update: 2022-12-12
Perma link: https://www.chemlin.org/chemical-elements/tellurium.php
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