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Chemical Properties of Tantalum and Technetium

Tantalum
Technetium
Chemical Properties of Technetium and Tantalum


Chemical Properties
Chemical Formula
Ta   
Tc   
Isotopes
  
  
Known Isotopes
31   
8
18   
21
Electronegativity
  
  
Pauling Electronegativity
1.50   
27
1.90   
11
Allred Rochow Electronegativity
1.33   
22
1.36   
20
Allen Electronegativity
1.34   
33
1.51   
28
Electropositivity
  
  
Pauling Electropositivity
2.50   
27
2.10   
99+
Ionization Energies
  
  
1st Energy Level
761.00 kJ/mol   
18
702.00 kJ/mol   
36
2nd Energy Level
1,500.00 kJ/mol   
40
1,470.00 kJ/mol   
99+
3rd Energy Level
Not Available   
2,850.00 kJ/mol   
33
Electrochemical Equivalent
1.35 g/amp-hr   
99+
0.52 g/amp-hr   
99+
Electron Work Function
4.25 eV   
21
Not Available   
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility   
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