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Chemical Properties of Actinium and Thulium


Chemical Properties of Thulium and Actinium


Chemical Properties

Chemical Formula
Ac   
Tm   

Isotopes
  
  

Known Isotopes
29   
10
32   
7

Electronegativity
  
  

Pauling Electronegativity
1.10   
99+
1.25   
35

Allred Rochow Electronegativity
1.00   
36
1.11   
29

Electropositivity
  
  

Pauling Electropositivity
2.90   
10
2.75   
19

Ionization Energies
  
  

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

2nd Energy Level
1,170.00 kJ/mol   
99+
1,160.00 kJ/mol   
99+

3rd Energy Level
1,900.00 kJ/mol   
99+
2,285.00 kJ/mol   
99+

4th Energy Level
4,700.00 kJ/mol   
23
4,120.00 kJ/mol   
33

Electrochemical Equivalent
2.82 g/amp-hr   
18
2.10 g/amp-hr   
26

Electron Work Function
Not Available   
Not Available   

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

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