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Chemical Properties of Lanthanum and Hafnium

Lanthanum
Hafnium
Chemical Properties of Hafnium and Lanthanum


Chemical Properties
Chemical Formula
La   
Hf   
Isotopes
  
  
Known Isotopes
31   
8
32   
7
Electronegativity
  
  
Pauling Electronegativity
1.10   
99+
1.30   
32
Allred Rochow Electronegativity
1.08   
31
1.23   
25
Allen Electronegativity
Not Available   
1.16   
37
Electropositivity
  
  
Pauling Electropositivity
2.90   
10
2.70   
22
Ionization Energies
  
  
1st Energy Level
538.10 kJ/mol   
99+
658.50 kJ/mol   
40
2nd Energy Level
1,067.00 kJ/mol   
99+
1,440.00 kJ/mol   
99+
3rd Energy Level
1,850.30 kJ/mol   
99+
2,250.00 kJ/mol   
99+
4th Energy Level
4,819.00 kJ/mol   
22
3,216.00 kJ/mol   
99+
5th Energy Level
5,940.00 kJ/mol   
25
Not Available   
Electrochemical Equivalent
1.73 g/amp-hr   
99+
1.66 g/amp-hr   
99+
Electron Work Function
3.50 eV   
31
3.90 eV   
27
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   
Atomic >>
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