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Chemical Properties of Erbium and Europium

Erbium
Europium
Chemical Properties of Europium and Erbium


Chemical Properties
Chemical Formula
Er   
Eu   
Isotopes
  
  
Known Isotopes
31   
8
31   
8
Electronegativity
  
  
Pauling Electronegativity
1.24   
36
1.20   
39
Sanderson Electronegativity
Not Available   
1.01   
22
Allred Rochow Electronegativity
1.11   
29
Not Available   
Electropositivity
  
  
Pauling Electropositivity
2.76   
18
Not Available   
Ionization Energies
  
  
1st Energy Level
589.30 kJ/mol   
99+
547.10 kJ/mol   
99+
2nd Energy Level
1,150.00 kJ/mol   
99+
1,085.00 kJ/mol   
99+
3rd Energy Level
2,194.00 kJ/mol   
99+
2,404.00 kJ/mol   
99+
4th Energy Level
4,120.00 kJ/mol   
33
4,120.00 kJ/mol   
33
Electrochemical Equivalent
2.08 g/amp-hr   
28
1.89 g/amp-hr   
33
Electron Work Function
Not Available   
2.50 eV   
99+
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes, Solubility   
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