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Chemical Properties of Hafnium and 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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