Teluryo

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Tellurium
52Te
Se

Te

Po
antimonytelluriumiodine
Appearance
silvery lustrous gray
General properties
Name, simbolo, kaiphan tellurium, Te, 52
Pronunciation Plantilya:IPAc-en
Plantilya:Respell
Element category metalloid
Group, period, block 165, p
Standard atomic weight 127.60
Electron configuration [Kr] 4d10 5s2 5p4
2, 8, 18, 18, 6
Electron shells of tellurium (2, 8, 18, 18, 6)
History
Discovery Franz-Joseph Müller von Reichenstein (1782)
First isolation Martin Heinrich Klaproth
Physical properties
Phase magahi
Density (near r.t.) 6.24 g·cm−3
Liquid density at m.p. 5.70 g·cm−3
Melting point 722.66 K, 449.51 °C, 841.12 °F
Boiling point 1261 K, 988 °C, 1810 °F
Heat of fusion 17.49 kJ·mol−1
Heat of vaporization 114.1 kJ·mol−1
Molar heat capacity 25.73 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K)     (775) (888) 1042 1266
Atomic properties
Oxidation states 6, 5, 4, 2, -2
(mildly acidic oxide)
Electronegativity 2.1 (Pauling scale)
Ionization energies 1st: 869.3 kJ·mol−1
2nd: 1790 kJ·mol−1
3rd: 2698 kJ·mol−1
Atomic radius 140 pm
Covalent radius 138±4 pm
Van der Waals radius 206 pm
Miscellanea
Crystal structure hexagonal[1]
Tellurium has a hexagonal crystal structure
Magnetic ordering diamagnetic[2]
Thermal conductivity (1.97–3.38) W·m−1·K−1
Speed of sound (thin rod) (20 °C) 2610 m·s−1
Young's modulus 43 GPa
Shear modulus 16 GPa
Bulk modulus 65 GPa
Mohs hardness 2.25
Brinell hardness 180 MPa
CAS registry number 13494-80-9
Most stable isotopes
Main article: Isotopes of tellurium
iso NA half-life DM DE (MeV) DP
120Te 0.09% >2.2×1016 y β+β+ 1.701 120Sn
121Te syn 16.78 d ε 1.040 121Sb
122Te 2.55% 122Te is stable with 70 neutrons
123Te 0.89% >6×1013 y ε 0.051 123Sb
124Te 4.74% 124Te is stable with 72 neutrons
125Te 7.07% 125Te is stable with 73 neutrons
126Te 18.84% 126Te is stable with 74 neutrons
127Te syn 9.35 h β 0.698 127I
128Te 31.74% 2.2×1024 y ββ 0.867 128Xe
129Te syn 69.6 min β 1.498 129I
130Te 34.08% 7.9×1020 y ββ 2.528 130Xe
t  h  u
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Ang teluryo (Iningles tellurium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Te ug kaiphan nga atomik 52. Ang teluryo mao ang metalloid.

Ang mga gi basihan niini[usba | edit source]

  1. Tellurium, mindat.org
  2. Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.


Galeriya sa hulagway[usba | edit source]