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Chemical Properties of Thulium and Samarium

Thulium
Samarium
Chemical Properties of Samarium and Thulium


Chemical Properties
Chemical Formula
Tm   
Sm   
Isotopes
  
  
Known Isotopes
32   
7
30   
9
Electronegativity
  
  
Pauling Electronegativity
1.25   
35
1.17   
40
Allred Rochow Electronegativity
1.11   
29
1.07   
32
Electropositivity
  
  
Pauling Electropositivity
2.75   
19
2.83   
14
Ionization Energies
  
  
1st Energy Level
596.70 kJ/mol   
99+
544.50 kJ/mol   
99+
2nd Energy Level
1,160.00 kJ/mol   
99+
1,070.00 kJ/mol   
99+
3rd Energy Level
2,285.00 kJ/mol   
99+
2,260.00 kJ/mol   
99+
4th Energy Level
4,120.00 kJ/mol   
33
3,990.00 kJ/mol   
37
Electrochemical Equivalent
2.10 g/amp-hr   
26
1.87 g/amp-hr   
34
Electron Work Function
Not Available   
2.70 eV   
99+
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes   
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