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Chemical Properties of Thulium and Neptunium


Chemical Properties of Neptunium and Thulium


Chemical Properties

Chemical Formula
Tm   
Np   

Isotopes
  
  

Known Isotopes
32   
7
20   
19

Electronegativity
  
  

Pauling Electronegativity
1.25   
35
1.36   
29

Allred Rochow Electronegativity
1.11   
29
1.22   
26

Electropositivity
  
  

Pauling Electropositivity
2.75   
19
2.64   
25

Ionization Energies
  
  

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

2nd Energy Level
1,160.00 kJ/mol   
99+
1,128.00 kJ/mol   
99+

3rd Energy Level
2,285.00 kJ/mol   
99+
1,997.00 kJ/mol   
99+

4th Energy Level
4,120.00 kJ/mol   
33
3,242.00 kJ/mol   
99+

Electrochemical Equivalent
2.10 g/amp-hr   
26
1.77 g/amp-hr   
39

Electron Work Function
Not Available   
Not Available   

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

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