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Chemical Properties of Fermium and Thulium


Chemical Properties of Thulium and Fermium


Chemical Properties

Chemical Formula
Fm   
Tm   

Isotopes
  
  

Known Isotopes
18   
21
32   
7

Electronegativity
  
  

Pauling Electronegativity
1.30   
32
1.25   
35

Allred Rochow Electronegativity
1.20   
27
1.11   
29

Electropositivity
  
  

Pauling Electropositivity
2.70   
22
2.75   
19

Ionization Energies
  
  

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

2nd Energy Level
1,225.00 kJ/mol   
99+
1,160.00 kJ/mol   
99+

3rd Energy Level
2,363.00 kJ/mol   
99+
2,285.00 kJ/mol   
99+

4th Energy Level
3,792.00 kJ/mol   
99+
4,120.00 kJ/mol   
33

Electrochemical Equivalent
3.20 g/amp-hr   
13
2.10 g/amp-hr   
26

Electron Work Function
Not Available   
Not Available   

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

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