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Chemical Properties of Technetium and Hafnium


Chemical Properties of Hafnium and Technetium


Chemical Properties

Chemical Formula
Tc   
Hf   

Isotopes
  
  

Known Isotopes
18   
21
32   
7

Electronegativity
  
  

Pauling Electronegativity
1.90   
11
1.30   
32

Allred Rochow Electronegativity
1.36   
20
1.23   
25

Allen Electronegativity
1.51   
28
1.16   
37

Electropositivity
  
  

Pauling Electropositivity
2.10   
99+
2.70   
22

Ionization Energies
  
  

1st Energy Level
702.00 kJ/mol   
36
658.50 kJ/mol   
40

2nd Energy Level
1,470.00 kJ/mol   
99+
1,440.00 kJ/mol   
99+

3rd Energy Level
2,850.00 kJ/mol   
33
2,250.00 kJ/mol   
99+

4th Energy Level
Not Available   
3,216.00 kJ/mol   
99+

Electrochemical Equivalent
0.52 g/amp-hr   
99+
1.66 g/amp-hr   
99+

Electron Work Function
Not Available   
3.90 eV   
27

Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   

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