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Chemical Properties of Zirconium and Hafnium

Zirconium
Hafnium
Chemical Properties of Hafnium and Zirconium


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