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Chemical Properties of Niobium and Technetium

Niobium
Technetium
Chemical Properties of Technetium and Niobium


Chemical Properties
Chemical Formula
Nb   
Tc   
Isotopes
  
  
Known Isotopes
17   
22
18   
21
Electronegativity
  
  
Pauling Electronegativity
1.60   
23
1.90   
11
Sanderson Electronegativity
1.42   
16
Not Available   
Allred Rochow Electronegativity
1.23   
25
1.36   
20
Allen Electronegativity
1.41   
31
1.51   
28
Electropositivity
  
  
Pauling Electropositivity
2.40   
31
2.10   
99+
Ionization Energies
  
  
1st Energy Level
652.10 kJ/mol   
99+
702.00 kJ/mol   
36
2nd Energy Level
1,380.00 kJ/mol   
99+
1,470.00 kJ/mol   
99+
3rd Energy Level
2,416.00 kJ/mol   
99+
2,850.00 kJ/mol   
33
4th Energy Level
3,700.00 kJ/mol   
99+
Not Available   
5th Energy Level
4,877.00 kJ/mol   
36
Not Available   
6th Energy Level
9,847.00 kJ/mol   
11
Not Available   
7th Energy level
12,100.00 kJ/mol   
14
Not Available   
Electrochemical Equivalent
0.69 g/amp-hr   
99+
0.52 g/amp-hr   
99+
Electron Work Function
4.30 eV   
18
Not Available   
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility   
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