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Chemical Properties of Thulium and Erbium


Chemical Properties of Erbium and Thulium


Chemical Properties

Chemical Formula
Tm   
Er   

Isotopes
  
  

Known Isotopes
32   
7
31   
8

Electronegativity
  
  

Pauling Electronegativity
1.25   
35
1.24   
36

Allred Rochow Electronegativity
1.11   
29
1.11   
29

Electropositivity
  
  

Pauling Electropositivity
2.75   
19
2.76   
18

Ionization Energies
  
  

1st Energy Level
596.70 kJ/mol   
99+
589.30 kJ/mol   
99+

2nd Energy Level
1,160.00 kJ/mol   
99+
1,150.00 kJ/mol   
99+

3rd Energy Level
2,285.00 kJ/mol   
99+
2,194.00 kJ/mol   
99+

4th Energy Level
4,120.00 kJ/mol   
33
4,120.00 kJ/mol   
33

Electrochemical Equivalent
2.10 g/amp-hr   
26
2.08 g/amp-hr   
28

Electron Work Function
Not Available   
Not Available   

Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes, Solubility   

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