آرنۍ غورنۍ پرانيستل

ټېکنېټيوم

(له Technetium نه مخ گرځېدلی)

ټېکنېټيوم (په انگرېزي: Technetium) له کیمیاوي عناصرو څخه یو دی چې په تناوبي جدول کې د Tc سمبول او ۴۳ اتمي شمېرې په وسیله ښودل شوی دی.

Technetium,  43Tc
عمومي خواص
Pronunciation /tɛkˈnʃiəm/
tek-NEE-shee-əm
Appearance shiny gray metal
Technetium په دوراني جدول کې
Hydrogen (diatomic nonmetal)
Helium (noble gas)
Lithium (alkali metal)
Beryllium (alkaline earth metal)
Boron (metalloid)
Carbon (polyatomic nonmetal)
Nitrogen (diatomic nonmetal)
Oxygen (diatomic nonmetal)
Fluorine (diatomic nonmetal)
Neon (noble gas)
Sodium (alkali metal)
Magnesium (alkaline earth metal)
Aluminium (post-transition metal)
Silicon (metalloid)
Phosphorus (polyatomic nonmetal)
Sulfur (polyatomic nonmetal)
Chlorine (diatomic nonmetal)
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 (polyatomic nonmetal)
Bromine (diatomic nonmetal)
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 (diatomic nonmetal)
Xenon (noble gas)
Caesium (alkali metal)
Barium (alkaline earth metal)
Lanthanum (lanthanide)
Cerium (lanthanide)
Praseodymium (lanthanide)
Neodymium (lanthanide)
Promethium (lanthanide)
Samarium (lanthanide)
Europium (lanthanide)
Gadolinium (lanthanide)
Terbium (lanthanide)
Dysprosium (lanthanide)
Holmium (lanthanide)
Erbium (lanthanide)
Thulium (lanthanide)
Ytterbium (lanthanide)
Lutetium (lanthanide)
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 (metalloid)
Radon (noble gas)
Francium (alkali metal)
Radium (alkaline earth metal)
Actinium (actinide)
Thorium (actinide)
Protactinium (actinide)
Uranium (actinide)
Neptunium (actinide)
Plutonium (actinide)
Americium (actinide)
Curium (actinide)
Berkelium (actinide)
Californium (actinide)
Einsteinium (actinide)
Fermium (actinide)
Mendelevium (actinide)
Nobelium (actinide)
Lawrencium (actinide)
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)
Nihonium (unknown chemical properties)
Flerovium (unknown chemical properties)
Moscovium (unknown chemical properties)
Livermorium (unknown chemical properties)
Tennessine (unknown chemical properties)
Oganesson (unknown chemical properties)
Mn

Tc

Re
molybdenumtechnetiumruthenium
اټومي شمیره (Z) 43
گروپ, پیریود group 7, period 5
بلاک d-block
Element category   transition metal
Mass number 98 (most stable isotope)
Electron configuration [Kr] 4d5 5s2
Electrons per shell
2, 8, 18, 13, 2
فزیکي خواص
حالت (at STP) جامد
دويلې کيدو ټکى 2430 K ​(2157 °C, ​3915 °F)
يشنا ټکی 4538 K ​(4265 °C, ​7709 °F)
Density near r.t. 11 g/cm3
Heat of fusion 33.29 kJ/mol
Heat of vaporization 585.2 kJ/mol
Molar heat capacity 24.27 J/(mol·K)
Vapor pressure (extrapolated)
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 2727 2998 3324 3726 4234 4894
اټومي خواص
Oxidation states 7, 6, 5, 4, 3,[۱] 2, 1,[۱] −1, −3 ​(a strongly acidic oxide)
Electronegativity Pauling scale: 1.9
Ionization energies
  • 1st: 702 kJ/mol
  • 2nd: 1470 kJ/mol
  • 3rd: 2850 kJ/mol
Atomic radius empirical: 136 pm
Covalent radius 147±7 pm
Miscellanea
Crystal structurehexagonal close-packed (hcp)
Hexagonal close packed crystal structure for technetium
Speed of sound thin rod 16,200 m/s (at 20 °C)
Thermal expansion 7.1 µm/(m·K)[۲] (at r.t.)
د تودوخې تېرېدنه 50.6 W/(m·K)
Electrical resistivity 200 nΩ·m (at 20 °C)
Magnetic ordering Paramagnetic
Magnetic susceptibility (χmol) +270.0·10−6 cm3/mol (298 K)[۳]
CAS Number 7440-26-8
History
Prediction Dmitri Mendeleev (1871)
Discovery and first isolation Emilio Segrè and Carlo Perrier (1937)
Main isotopes of technetium
آيسو­ټوپ Abun­dance نیم ژوند (t1/2) Decay mode Pro­duct

کينډۍ:Infobox element/isotopes decay3 کينډۍ:Infobox element/isotopes decay2

97Tc syn 2.6×106 y ε 97Mo
97mTc syn 91 d IT 97Tc

کينډۍ:Infobox element/isotopes decay2

99Tc trace 2.111×105 y β 99Ru

کينډۍ:Infobox element/isotopes decay2

| references | in Wikidata

مشخصاتسمول

تاریخچهسمول

مرکباتسمول

د استعمال ځایونهسمول

سرچينېسمول

  1. ۱٫۰ ۱٫۱ . Technetium: technetium(III) iodide compound data. OpenMOPAC.net
  2. Cverna, Fran (2002). "Ch. 2 Thermal Expansion". ASM Ready Reference: Thermal properties of metals. ASM International. ISBN 978-0-87170-768-0. http://www.owlnet.rice.edu/~msci301/ThermalExpansion.pdf. 
  3. Weast, Robert (1984). [اصطلاحي تېروتنه: د ناپېژندلې ليکنښې لوښه "۱". CRC, Handbook of Chemistry and Physics]. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4. 

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