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Chemical Properties of Erbium and Lanthanum

Erbium
Lanthanum
Chemical Properties of Lanthanum and Erbium


Chemical Properties
Chemical Formula
Er   
La   
Isotopes
  
  
Known Isotopes
31   
8
31   
8
Electronegativity
  
  
Pauling Electronegativity
1.24   
36
1.10   
99+
Allred Rochow Electronegativity
1.11   
29
1.08   
31
Electropositivity
  
  
Pauling Electropositivity
2.76   
18
2.90   
10
Ionization Energies
  
  
1st Energy Level
589.30 kJ/mol   
99+
538.10 kJ/mol   
99+
2nd Energy Level
1,150.00 kJ/mol   
99+
1,067.00 kJ/mol   
99+
3rd Energy Level
2,194.00 kJ/mol   
99+
1,850.30 kJ/mol   
99+
4th Energy Level
4,120.00 kJ/mol   
33
4,819.00 kJ/mol   
22
5th Energy Level
Not Available   
5,940.00 kJ/mol   
25
Electrochemical Equivalent
2.08 g/amp-hr   
28
1.73 g/amp-hr   
99+
Electron Work Function
Not Available   
3.50 eV   
31
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes, Solubility   
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