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Chemical Properties of Americium and Neptunium


Chemical Properties of Neptunium and Americium


Chemical Properties

Chemical Formula
Am   
Np   

Isotopes
  
  

Known Isotopes
16   
23
20   
19

Electronegativity
  
  

Pauling Electronegativity
1.30   
32
1.36   
29

Allred Rochow Electronegativity
1.20   
27
1.22   
26

Electropositivity
  
  

Pauling Electropositivity
2.70   
22
2.64   
25

Ionization Energies
  
  

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

2nd Energy Level
1,158.00 kJ/mol   
99+
1,128.00 kJ/mol   
99+

3rd Energy Level
2,132.00 kJ/mol   
99+
1,997.00 kJ/mol   
99+

4th Energy Level
3,493.00 kJ/mol   
99+
3,242.00 kJ/mol   
99+

Electrochemical Equivalent
3.02 g/amp-hr   
17
1.77 g/amp-hr   
39

Electron Work Function
Not Available   
Not Available   

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

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