टेक्नीशियन तत्व के बारे में जानकारी (Information about Technetium element)
Technetium
01. 1st ionization energy [eV] → 7.28
02. 2nd ionization energy [eV] → 15.26
03. 3rd ionization energy [eV] → 29.54
04. Atomic number → 43
05. Atomic radius [pm] → 183
06. Boiling point [°C] → 4880
07. Covalent radius [pm] → 156
08. Density [g/cm3] → 11.56
09. Discovery → 1937
10. Electrical conductivity [S m-1] → 5 • 10^6
11. Electron configuration → 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d5 5s2
12. Electronegativity → 1.9
13. Element category → Transition elements
14. Group → VII.B
15. Heat capacity [J K-1g-1] → 0.24
16. Latin name → Tecnetium
17. Melting point [°C] → 2150
18. Oxidation numbers → 2, 4, 7
19. Period → 5
20. Relative atomic mass → 98.9063
21. Stable isotopes → 0
22. State → Solid
23. Symbol → Tc
24. Thermal conductivity [W m-1K-1] → 50.6
25. Unstable isotopes → 22
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