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Chemical Properties of Hafnium and Rhenium

Hafnium
Rhenium
Chemical Properties of Rhenium and Hafnium


Chemical Properties
Chemical Formula
Hf   
Re   
Isotopes
  
  
Known Isotopes
32   
7
33   
6
Electronegativity
  
  
Pauling Electronegativity
1.30   
32
1.90   
11
Allred Rochow Electronegativity
1.23   
25
1.46   
15
Allen Electronegativity
1.16   
37
1.60   
21
Electropositivity
  
  
Pauling Electropositivity
2.70   
22
2.10   
99+
Ionization Energies
  
  
1st Energy Level
658.50 kJ/mol   
40
760.00 kJ/mol   
20
2nd Energy Level
1,440.00 kJ/mol   
99+
1,260.00 kJ/mol   
99+
3rd Energy Level
2,250.00 kJ/mol   
99+
2,510.00 kJ/mol   
99+
4th Energy Level
3,216.00 kJ/mol   
99+
3,640.00 kJ/mol   
99+
Electrochemical Equivalent
1.66 g/amp-hr   
99+
0.99 g/amp-hr   
99+
Electron Work Function
3.90 eV   
27
4.96 eV   
7
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   
Corrosion, Ionization, Radioactive Isotopes, Solubility   
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