ଟେକ୍ନିସିଅମ ହେଉଛି ଏକ ରାସାୟନିକ ମୌଳିକ ଯାହାର ପ୍ରତୀକ Tc ଓ ପରମାଣୁ କ୍ରମାଙ୍କ ୪୩ ।
Quick Facts ସାଧାରଣ ଗୁଣ, ନାମ, ପ୍ରତୀକ ...
Technetium, 43Tc![Thin gray sheet of metal, with a dull shine, encased in a glass tube](//upload.wikimedia.org/wikipedia/or/thumb/5/5d/Technetium.jpeg/220px-Technetium.jpeg) |
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ନାମ, ପ୍ରତୀକ | technetium, Tc |
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Appearance | shiny gray metal |
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ଉଚ୍ଚାରଣ | tek-NEE-shee-əm |
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ପରମାଣୁ କ୍ରମାଙ୍କ (Z) | 43 |
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ଶ୍ରେଣୀ, ବ୍ଳକ | group 7, d-block |
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ପର୍ଯ୍ୟାୟ | period 5 |
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ମୌଳିକ ପ୍ରକାର | transition metal |
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ମାନକ ପରମାଣବିକ ଓଜନ (Ar) | [98] |
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ଇଲେକ୍ଟ୍ରୋନ୍ ବିନ୍ୟାସ | [Kr] 4d5 5s2 |
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per shell | 2, 8, 18, 13, 2 |
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ଅବସ୍ଥା | solid |
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ଗଳନାଙ୍କ | 2430 K (2157 °C, 3915 °F) |
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ସ୍ଫୁଟନାଙ୍କ | 4538 K (4265 °C, 7709 °F) |
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Density near r.t. | 11 g/cm3 |
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Heat of fusion | 33.29 kJ/mol |
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Heat of | 585.2 kJ/mol |
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Molar heat capacity | 24.27 J/(mol·K) |
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pressure (extrapolated)
P (Pa) |
1 |
10 |
100 |
1 k |
10 k |
100 k |
at T (K) |
2727 |
2998 |
3324 |
3726 |
4234 |
4894 |
|
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Oxidation states | 7, 6, 5, 4, 3[1], 2, 1[2], -1, -3 strongly acidic oxide |
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Electronegativity | Pauling scale: 1.9 |
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Atomic radius | empirical: 136 pm |
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Covalent radius | 147±7 pm |
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Crystal structure | hexagonal close-packed (hcp) |
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Speed of sound thin rod | 16,200 m/s (at 20 °C) |
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Thermal conductivity | 50.6 W/(m·K) |
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Magnetic ordering | Paramagnetic |
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CAS Number | 7440-26-8 |
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Prediction | Dmitri Mendeleev (1871) |
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ଆବିଷ୍କାର | Carlo Perrier and Emilio Segrè (1937) |
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First isolation | Carlo Perrier and Emilio Segrè (1937) |
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|
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 |
- |
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| references |
Close
- Cotton, F. A.; Wilkinson, G.; Murillo, C. A.; Bochmann, M. (1999). Advanced Inorganic Chemistry (6th ed.). New York: John Wiley & Sons, Inc. ISBN 0-471-19957-5.
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- Emsley, J. (2001). Nature's Building Blocks: An A-Z Guide to the Elements. Oxford, England, UK: Oxford University Press. ISBN 0-19-850340-7.
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- Greenwood, N. N.; Earnshaw, A. (1997). Chemistry of the Elements (2nd ed.). Oxford: Butterworth-Heinemann. ISBN 0-7506-3365-4.
- Heiserman, D. L. (1992). "Element 43: Technetium". Exploring Chemical Elements and their Compounds. New York: TAB Books. ISBN 0-8306-3018-X.
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: CS1 maint: ref duplicates default (link)
- Schwochau, K. (2000). Technetium: chemistry and radiopharmaceutical applications. Wiley-VCH. ISBN 3-527-29496-1.
ଉଇକିମିଡ଼ିଆ କମନ୍ସରେ
Technetium
ବାବଦରେ ମାଧ୍ୟମ ରହିଛି ।
- B.J. Wilson, ed. (1966). The radiochemical Manual (2nd ed.). ISBN 0-7058-1768-7.
- Scerri, E.R. (2007). The Periodic Table, Its Story and Its Significance. Oxford University Press,. ISBN 0-19-530573-6.
{{cite book}}
: CS1 maint: extra punctuation (link)
- Choppin, G.; Liljenzin, J-O; Rydberg, J. (2002). "Nuclear Mass and Stability". Radiochemistry and nuclear chemistry (3rd ed.). Butterworth-Heinemann. pp. 41–57. ISBN 978-0-7506-7463-8.
- WebElements.com – Technetium, and EnvironmentalChemistry.com – Technetium
- Nudat 2 Archived 2021-04-28 at the Wayback Machine. nuclide chart from the National Nuclear Data Center, Brookhaven National Laboratory
- Nuclides and Isotopes Archived 2011-02-02 at the Wayback Machine. Fourteenth Edition: Chart of the Nuclides, General Electric Company, 1989
- Chemistry in its element podcast (MP3) from the Royal Society of Chemistry's Chemistry World: Technetium