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Chemical Properties of Lanthanum and Erbium

Lanthanum
Erbium
Chemical Properties of Erbium and Lanthanum


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