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Chemical Properties of Hafnium and Technetium

Hafnium
Technetium
Chemical Properties of Technetium and Hafnium


Chemical Properties
Chemical Formula
Hf   
Tc   
Isotopes
  
  
Known Isotopes
32   
7
18   
21
Electronegativity
  
  
Pauling Electronegativity
1.30   
32
1.90   
11
Allred Rochow Electronegativity
1.23   
25
1.36   
20
Allen Electronegativity
1.16   
37
1.51   
28
Electropositivity
  
  
Pauling Electropositivity
2.70   
22
2.10   
99+
Ionization Energies
  
  
1st Energy Level
658.50 kJ/mol   
40
702.00 kJ/mol   
36
2nd Energy Level
1,440.00 kJ/mol   
99+
1,470.00 kJ/mol   
99+
3rd Energy Level
2,250.00 kJ/mol   
99+
2,850.00 kJ/mol   
33
4th Energy Level
3,216.00 kJ/mol   
99+
Not Available   
Electrochemical Equivalent
1.66 g/amp-hr   
99+
0.52 g/amp-hr   
99+
Electron Work Function
3.90 eV   
27
Not Available   
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility   
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