Tellurium

Tellurium, ₅₂Te

Tellurium
Pípè	/tᵻˈljʊəriəm/ ​(tə-LEWR-ee-əm)
Ìhànsójú	silvery lustrous gray
Ìwúwo átọ̀mù Ar, std(Te)	127.60(3)
Tellurium ní orí tábìlì àyè
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
Nọ́mbà átọ̀mù (Z)	52
Ẹgbẹ́	group 16 (chalcogens)
Àyè	àyè 5
Àdìpọ̀	Àdìpọ̀-p
Ẹ̀ka ẹ́límẹ́ntì	Metalloid
Ìtò ẹ̀lẹ́ktrọ́nù	[Kr] 4d10 5s2 5p4
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan	2, 8, 18, 18, 6
Àwọn ohun ìní ara
Ìfarahàn at STP	solid
Ìgbà ìyọ́	722.66 K ​(449.51 °C, ​841.12 °F)
Ígbà ìhó	1261 K ​(988 °C, ​1810 °F)
Kíki (near r.t.)	6.24 g/cm3
when liquid (at m.p.)	5.70 g/cm3
Heat of fusion	17.49 kJ/mol
Heat of	114.1 kJ/mol
Molar heat capacity	25.73 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 states	−2, −1, +1, +2, +3, +4, +5, +6 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment
Electronegativity	Pauling scale: 2.1
Atomic radius	empirical: 140 pm
Covalent radius	138±4 pm
Van der Waals radius	206 pm
Spectral lines of tellurium
Other properties
Natural occurrence	primordial
Crystal structure	​hexagonal
Speed of sound thin rod	2610 m/s (at 20 °C)
Thermal conductivity	(1.97–3.38) W/(m·K)
Magnetic ordering	diamagnetic
Young's modulus	43 GPa
Shear modulus	16 GPa
Bulk modulus	65 GPa
Mohs hardness	2.25
Brinell hardness	180 MPa
CAS Number	13494-80-9
Main isotopes of tellurium
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct 120Te 0.09% >2.2×1016y ε ε 1.701 120Sn 121Te syn 16.78 d ε 1.040 121Sb 122Te 2.55% 122Te is stable with 70 neutrons 123Te 0.89% >1.0×1013 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 β−β− 0.867 128Xe 129Te syn 69.6 min β− 1.498 129I 130Te 34.08% 7.9×1020 y β−β− 2.528 130Xe