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Chemical Properties of Erbium and Terbium

Erbium
Terbium
Chemical Properties of Terbium and Erbium


Chemical Properties
Chemical Formula
Er   
Tb   
Isotopes
  
  
Known Isotopes
31   
8
26   
13
Electronegativity
  
  
Pauling Electronegativity
1.24   
36
Not Available   
Allred Rochow Electronegativity
1.11   
29
1.10   
30
Electropositivity
  
  
Pauling Electropositivity
2.76   
18
Not Available   
Ionization Energies
  
  
1st Energy Level
589.30 kJ/mol   
99+
603.40 kJ/mol   
99+
2nd Energy Level
1,150.00 kJ/mol   
99+
1,174.80 kJ/mol   
99+
3rd Energy Level
2,194.00 kJ/mol   
99+
2,417.00 kJ/mol   
99+
4th Energy Level
4,120.00 kJ/mol   
33
4,203.00 kJ/mol   
31
Electrochemical Equivalent
2.08 g/amp-hr   
28
1.98 g/amp-hr   
31
Electron Work Function
Not Available   
3.00 eV   
36
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes, Solubility   
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