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Chemical Properties of Thulium and 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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