ମୁଖ୍ୟ ସୂଚୀ ଦେଖିବେ

ଟେକ୍ନିସିଅମ ହେଉଛି ଏକ ରାସାୟନିକ ମୌଳିକ ଯାହାର ପ୍ରତୀକ Tcପରମାଣୁ କ୍ରମାଙ୍କ ୪୩ ଅଟେ ।

Technetium,  43Tc
Thin gray sheet of metal, with a dull shine, encased in a glass tube
ସାଧାରଣ ଗୁଣ
ନାମ, ପ୍ରତୀକtechnetium, Tc
Appearanceshiny gray metal
ଉଚ୍ଚାରଣ /tɛkˈnʃiəm/
tek-NEE-shee-əm
Technetium 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)
Mn

Tc

Re
molybdenumtechnetiumruthenium
ପରମାଣୁ କ୍ରମାଙ୍କ (Z)43
ଶ୍ରେଣୀ, ବ୍ଳକgroup 7, d-block
ପର୍ଯ୍ୟାୟperiod 5
ମୌଳିକ ପ୍ରକାର  transition metal
ମାନକ ପରମାଣବିକ ଓଜନ (Ar)[98]
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ[Kr] 4d5 5s2
per shell
2, 8, 18, 13, 2
ଭୌତିକ ଗୁଣ
ଅବସ୍ଥାsolid
ଗଳନାଙ୍କ2430 K ​(2157 °C, ​3915 °F)
ସ୍ଫୁଟନାଙ୍କ4538 K ​(4265 °C, ​7709 °F)
Density 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 states7, 6, 5, 4, 3[୧], 2, 1[୨], -1, -3 ​strongly acidic oxide
ElectronegativityPauling scale: 1.9
Atomic radiusempirical: 136 pm
Covalent radius147±7 pm
Miscellanea
Crystal structurehexagonal close-packed (hcp)
Hexagonal close packed 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
ଇତିହାସ
PredictionDmitri Mendeleev (1871)
ଆବିଷ୍କାରCarlo Perrier and Emilio Segrè (1937)
First isolationCarlo Perrier and Emilio Segrè (1937)
Most stable isotopes of technetium
iso NA half-life DM DE (MeV) DP
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 -
| references

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ଆଧାରସମ୍ପାଦନ କରନ୍ତୁ

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

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