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Template:Infobox tellurium

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Tellurium, 52Te
File:Tellurium2.jpg
Tellurium
Pronunciation/tɛˈljʊəriəm/ ​(te-LURE-ee-əm)
Appearancesilvery lustrous gray (crystalline),
brown-black powder (amorphous)
Standard atomic weight Ar°(Te)
Tellurium in the periodic table
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
Se
↑
Te
↓
Po
antimony ← tellurium → iodine
Atomic number (Z)52
Groupgroup 16 (chalcogens)
Periodperiod 5
Block  p-block
Electron configuration[Kr] 4d10 5s2 5p4
Electrons per shell2, 8, 18, 18, 6
Physical properties
Phase at STPsolid
Melting point722.66 K ​(449.51 °C, ​841.12 °F)
Boiling point1261 K ​(988 °C, ​1810 °F)
Density (at 20° C)6.237 g/cm3[3]
when liquid (at m.p.)5.70 g/cm3
Heat of fusion17.49 kJ/mol
Heat of vaporization114.1 kJ/mol
Molar heat capacity25.73 J/(mol·K)
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K)   (775) (888) 1042 1266
Atomic properties
Oxidation statescommon: −2, +2, +4, +6
−1,? 0,? +1,? +3,? +5[4]
ElectronegativityPauling scale: 2.1
Ionization energies
  • 1st: 869.3 kJ/mol
  • 2nd: 1790 kJ/mol
  • 3rd: 2698 kJ/mol
Atomic radiusempirical: 140 pm
Covalent radius138±4 pm
Van der Waals radius206 pm
Color lines in a spectral range
Spectral lines of tellurium
Other properties
Natural occurrenceprimordial
Crystal structure ​hexagonal[5] (hP3)
Lattice constantsa = 445.59 pm
c = 592.75 pm (at 20 °C)[3]
Thermal expansion19.0×10−6/K (at 20 °C)[lower-alpha 1]
Thermal conductivity1.97–3.38 W/(m⋅K)
Magnetic orderingdiamagnetic[6]
Molar magnetic susceptibility−39.5×10−6 cm3/mol (298 K)[7]
Young's modulus43 GPa
Shear modulus16 GPa
Bulk modulus65 GPa
Speed of sound thin rod2610 m/s (at 20 °C)
Mohs hardness2.25
Brinell hardness180–270 MPa
CAS Number13494-80-9
History
Namingafter Roman Tellus, deity of the Earth
DiscoveryFranz-Joseph Müller von Reichenstein (1782)
First isolationMartin Heinrich Klaproth
Isotopes of tellurium
Main isotopes[8] Decay
abun­dance half-life (t1/2) mode pro­duct
120Te 0.09% stable
121Te synth 19.31 d ε 121Sb
122Te 2.55% stable
123Te 0.89% stable[9]
124Te 4.74% stable
125Te 7.07% stable
126Te 18.8% stable
127Te synth 9.35 h β− 127I
128Te 31.7% 2.2×1024 y β−β− 128Xe
129Te synth 69.6 min β− 129I
130Te 34.1% 7.91×1020 y β−β− 130Xe
File:Symbol category class.svg Category: Tellurium
| references
child table, as reused in {IB-Te}
Main isotopes of tellurium
Main isotopes[8] Decay
abun­dance half-life (t1/2) mode pro­duct
120Te 0.09% stable
121Te synth 19.31 d ε 121Sb
122Te 2.55% stable
123Te 0.89% stable[10]
124Te 4.74% stable
125Te 7.07% stable
126Te 18.8% stable
127Te synth 9.35 h β− 127I
128Te 31.7% 2.2×1024 y β−β− 128Xe
129Te synth 69.6 min β− 129I
130Te 34.1% 7.91×1020 y β−β− 130Xe
Data sets read by {{Infobox element}}
Name and identifiers
Symbol etymology (11 non-trivial)
Top image (caption, alt) caption:

alt:
Pronunciation
Allotropes (overview)
Group (overview)
Period (overview)
Block (overview)
Natural occurrence
Phase at STP
Oxidation states
Spectral lines image
Electron configuration (cmt, ref)
Isotopes
Standard atomic weight
  most stable isotope
File:Notification-icon-Wikidata-logo.svg Wikidata
Wikidata *
* Not used in {{Infobox element}} (2023-01-01)
See also {{Index of data sets}} · Cat:data sets (0) · (this table:
)

Notes

  1. ↑ The thermal expansion of tellurium is highly anisotropic: the parameters (at 20 °C) for each crystal axis are αa = 29.6×10−6/K, αc = −2.28×10−6/K, and αaverage = αV/3 = 19.0×10−6/K.[3]

References

These references will appear in the article, but this list appears only on this page.
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