Technetium

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Technetium, 43Tc
Fáìlì:Tc,43.jpg
Technetium
Pípè /tɛkˈnʃiəm/ (tek-NEE-shee-əm)
ÌhànsójúShiny gray metal
nọ́mbà ìsújọ[97]
Technetium 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
Mn

Tc

Re
molybdenumtechnetiumruthenium
Nọ́mbà átọ̀mù (Z)43
Ẹgbẹ́group 7
Àyèàyè 5
Àdìpọ̀Àdìpọ̀-d
Ẹ̀ka ẹ́límẹ́ntì  Transition metal
Ìtò ẹ̀lẹ́ktrọ́nù[Kr] 4d5 5s2
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan2, 8, 18, 13, 2
Àwọn ohun ìní ara
Ìfarahàn at STPsolid
Ìgbà ìyọ́2430 K ​(2157 °C, ​3915 °F)
Ígbà ìhó4538 K ​(4265 °C, ​7709 °F)
Kíki (near r.t.)11 g/cm3
Heat of fusion33.29 kJ/mol
Heat of 585.2 kJ/mol
Molar heat capacity24.27 J/(mol·K)
 pressure extrapolated
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 2727 2998 3324 3726 4234 4894
Atomic properties
Oxidation states−3, −1, 0, +1,[1] +2, +3,[1] +4, +5, +6, +7 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment
ElectronegativityPauling scale: 1.9
Atomic radiusempirical: 136 pm
Covalent radius147±7 pm
Color lines in a spectral range
Spectral lines of technetium
Other properties
Natural occurrencefrom decay
Crystal structurehexagonal
Hexagonal crystal structure for technetium
Speed of sound thin rod16,200 m/s (at 20 °C)
Thermal conductivity50.6 W/(m·K)
Magnetic orderingParamagnetic
CAS Number7440-26-8
Main isotopes of technetium
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct
95mTc syn 61 d ε - 95Mo
γ 0.204, 0.582,
0.835
-
IT 0.0389, e 95Tc
96Tc syn 4.3 d ε - 96Mo
γ 0.778, 0.849,
0.812
-
97Tc syn 2.6×106 y ε - 97Mo
97mTc syn 91 d IT 0.965, e 97Tc
98Tc syn 4.2×106 y β 0.4 98Ru
γ 0.745, 0.652 -
99Tc trace 2.111×105 y β 0.294 99Ru
99mTc syn 6.01 h IT 0.142, 0.002 99Tc
γ 0.140 -
Àdàkọ:Category-inline
| references


Itokasi[àtúnṣe | àtúnṣe àmìọ̀rọ̀]

  1. 1.0 1.1 "Technetium: technetium(III) iodide compound data". OpenMOPAC.net. Retrieved 2007-12-10. 
  2. "Technetium: technetium(III) iodide compound data". OpenMOPAC.net. Retrieved 2007-12-10. 
  3. "Technetium: technetium(I) fluoride compound data". OpenMOPAC.net. Retrieved 2007-12-10.