Tellurium,  52Te
ସାଧାରଣ ଗୁଣ
ନାମ, ପ୍ରତୀକtellurium, Te
Appearancesilvery lustrous gray
ଉଚ୍ଚାରଣ/t[invalid input: 'ɨ']ˈl[invalid input: '(j)']ʊəriəm/
te-LEWR-ee-əm
Tellurium in the periodic table
Hydrogen (other non-metal)
Helium (noble gas)
Lithium (alkali metal)
Beryllium (alkaline earth metal)
Boron (metalloid)
Carbon (other non-metal)
Nitrogen (other non-metal)
Oxygen (other non-metal)
Fluorine (halogen)
Neon (noble gas)
Sodium (alkali metal)
Magnesium (alkaline earth metal)
Aluminium (post-transition metal)
Silicon (metalloid)
Phosphorus (other non-metal)
Sulfur (other non-metal)
Chlorine (halogen)
Argon (noble gas)
Potassium (alkali metal)
Calcium (alkaline earth metal)
Scandium (transition metal)
Titanium (transition metal)
Vanadium (transition metal)
Chromium (transition metal)
Manganese (transition metal)
Iron (transition metal)
Cobalt (transition metal)
Nickel (transition metal)
Copper (transition metal)
Zinc (transition metal)
Gallium (post-transition metal)
Germanium (metalloid)
Arsenic (metalloid)
Selenium (other non-metal)
Bromine (halogen)
Krypton (noble gas)
Rubidium (alkali metal)
Strontium (alkaline earth metal)
Yttrium (transition metal)
Zirconium (transition metal)
Niobium (transition metal)
Molybdenum (transition metal)
Technetium (transition metal)
Ruthenium (transition metal)
Rhodium (transition metal)
Palladium (transition metal)
Silver (transition metal)
Cadmium (transition metal)
Indium (post-transition metal)
Tin (post-transition metal)
Antimony (metalloid)
Tellurium (metalloid)
Iodine (halogen)
Xenon (noble gas)
Caesium (alkali metal)
Barium (alkaline earth metal)
Lanthanum (lanthanoid)
Cerium (lanthanoid)
Praseodymium (lanthanoid)
Neodymium (lanthanoid)
Promethium (lanthanoid)
Samarium (lanthanoid)
Europium (lanthanoid)
Gadolinium (lanthanoid)
Terbium (lanthanoid)
Dysprosium (lanthanoid)
Holmium (lanthanoid)
Erbium (lanthanoid)
Thulium (lanthanoid)
Ytterbium (lanthanoid)
Lutetium (lanthanoid)
Hafnium (transition metal)
Tantalum (transition metal)
Tungsten (transition metal)
Rhenium (transition metal)
Osmium (transition metal)
Iridium (transition metal)
Platinum (transition metal)
Gold (transition metal)
Mercury (transition metal)
Thallium (post-transition metal)
Lead (post-transition metal)
Bismuth (post-transition metal)
Polonium (post-transition metal)
Astatine (halogen)
Radon (noble gas)
Francium (alkali metal)
Radium (alkaline earth metal)
Actinium (actinoid)
Thorium (actinoid)
Protactinium (actinoid)
Uranium (actinoid)
Neptunium (actinoid)
Plutonium (actinoid)
Americium (actinoid)
Curium (actinoid)
Berkelium (actinoid)
Californium (actinoid)
Einsteinium (actinoid)
Fermium (actinoid)
Mendelevium (actinoid)
Nobelium (actinoid)
Lawrencium (actinoid)
Rutherfordium (transition metal)
Dubnium (transition metal)
Seaborgium (transition metal)
Bohrium (transition metal)
Hassium (transition metal)
Meitnerium (unknown chemical properties)
Darmstadtium (unknown chemical properties)
Roentgenium (unknown chemical properties)
Copernicium (transition metal)
Ununtrium (unknown chemical properties)
Flerovium (unknown chemical properties)
Ununpentium (unknown chemical properties)
Livermorium (unknown chemical properties)
Ununseptium (unknown chemical properties)
Ununoctium (unknown chemical properties)
Se

Te

Po
antimonytelluriumiodine
ପରମାଣୁ କ୍ରମାଙ୍କ (Z)52
ଶ୍ରେଣୀ, ବ୍ଳକgroup 16 (chalcogens), p-block
ପର୍ଯ୍ୟାୟperiod 5
ମୌଳିକ ପ୍ରକାର  metalloid
ମାନକ ପରମାଣବିକ ଓଜନ (Ar)127.60
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ[Kr] 4d10 5s2 5p4
per shell
2, 8, 18, 18, 6
ଭୌତିକ ଗୁଣ
ଅବସ୍ଥାsolid
ଗଳନାଙ୍କ722.66 K ​(449.51 °C, ​841.12 °F)
ସ୍ଫୁଟନାଙ୍କ1261 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 114.1 kJ/mol
Molar heat capacity25.73 J/(mol·K)
 pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K)     (775) (888) 1042 1266
Atomic properties
Oxidation states6, 5, 4, 2, -2
(mildly acidic oxide)
ElectronegativityPauling scale: 2.1
Atomic radiusempirical: 140 pm
Covalent radius138±4 pm
Van der Waals radius206 pm
Miscellanea
Crystal structurehexagonal[]
Hexagonal crystal structure for tellurium
Speed of sound thin rod2610 m/s (at 20 °C)
Thermal conductivity(1.97–3.38) W/(m·K)
Magnetic orderingdiamagnetic[]
Young's modulus43 GPa
Shear modulus16 GPa
Bulk modulus65 GPa
Mohs hardness2.25
Brinell hardness180 MPa
CAS Number13494-80-9
ଇତିହାସ
ଆବିଷ୍କାରFranz-Joseph Müller von Reichenstein (1782)
First isolationMartin Heinrich Klaproth
Most stable 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
| references

References

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