Template:Infobox tellurium/sandbox

From blackwiki
Jump to navigation Jump to search

[[Category:Template:Pagetype with short description]]

Tellurium, 52Te
Tellurium2.jpg
Tellurium
Pronunciation/tɪˈljʊəriəm/ (Template:Respell)
Appearancesilvery lustrous gray
Standard atomic weight Ar, std(Te)Template:Val[1]
Tellurium in the periodic table
Template:Periodic table (32 columns, micro) Se

Te

Po
antimonytelluriumiodine
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 (near r.t.)6.24 g/cm3
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 states−2, −1, +1, +2, +3, +4, +5, +6 (a mildly acidic oxide)
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 structurehexagonal[2]
Hexagonal crystal structure for tellurium
Speed of sound thin rod2610 m/s (at 20 °C)
Thermal conductivity1.97–3.38 W/(m·K)
Magnetic orderingdiamagnetic[3]
Young's modulus43 GPa
Shear modulus16 GPa
Bulk modulus65 GPa
Mohs hardness2.25
Brinell hardness180 MPa
CAS Number13494-80-9
History
Namingafter Roman Tellus, deity of the Earth
DiscoveryFranz-Joseph Müller von Reichenstein (1782)
First isolationMartin Heinrich Klaproth
Main isotopes of tellurium
[[Isotope|IsoTemplate:Shytope]] [[Natural abundance|AbunTemplate:Shydance]] Half-life (t1/2) Decay mode [[Decay product|ProTemplate:Shyduct]]
120Te 0.09% >2.2×1016 y (β+β+) 120Sn
121Te syn 16.78 d ε 121Sb
122Te 2.55% - (SF)
123Te 0.89% >9.2×1016 y[4] (ε) 123Sb
124Te 4.74% - (SF)
125Te 7.07% - (SF)
126Te 18.84% - (SF)
127Te syn 9.35 h β 127I
128Te 31.74% 2.2×1024 y ββ 128Xe
129Te syn 69.6 min β 129I
130Te 34.08% 7.9×1020 y ββ 130Xe
Decay modes in parentheses are predicted, but have not yet been observed
Category Category: Tellurium
| references

References

  1. Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
  2. Tellurium, mindat.org
  3. Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.
  4. New Limits on Naturally Occurring Electron Capture of 123Te full paper on arXiv URL: [1] DOI: 10.1103/PhysRevC.67.014323.

Lua error: Internal error: The interpreter has terminated with signal "24".