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Chemical Properties of Hafnium and Zirconium

Hafnium
Zirconium
Chemical Properties of Zirconium and Hafnium


Chemical Properties
Chemical Formula
Hf   
Zr   
Isotopes
  
  
Known Isotopes
32   
7
24   
15
Electronegativity
  
  
Pauling Electronegativity
1.30   
32
1.33   
30
Sanderson Electronegativity
Not Available   
0.90   
25
Allred Rochow Electronegativity
1.23   
25
1.22   
26
Allen Electronegativity
1.16   
37
1.32   
34
Electropositivity
  
  
Pauling Electropositivity
2.70   
22
2.67   
24
Ionization Energies
  
  
1st Energy Level
658.50 kJ/mol   
40
640.10 kJ/mol   
99+
2nd Energy Level
1,440.00 kJ/mol   
99+
1,270.00 kJ/mol   
99+
3rd Energy Level
2,250.00 kJ/mol   
99+
2,218.00 kJ/mol   
99+
4th Energy Level
3,216.00 kJ/mol   
99+
3,313.00 kJ/mol   
99+
5th Energy Level
Not Available   
7,752.00 kJ/mol   
10
6th Energy Level
Not Available   
9,500.00 kJ/mol   
15
Electrochemical Equivalent
1.66 g/amp-hr   
99+
0.85 g/amp-hr   
99+
Electron Work Function
3.90 eV   
27
4.05 eV   
26
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   
Anti Corrosion, Flammable, Ionization, Radioactive Isotopes, Solubility   
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