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Chemical Properties of Lead and Neptunium


Chemical Properties of Neptunium and Lead


Chemical Properties

Chemical Formula
Pb   
Np   

Isotopes
  
  

Known Isotopes
35   
4
20   
19

Electronegativity
  
  

Pauling Electronegativity
1.87   
13
1.36   
29

Sanderson Electronegativity
2.29   
4
Not Available   

Allred Rochow Electronegativity
1.55   
11
1.22   
26

Mulliken-Jaffe Electronegativity
2.41   
2
Not Available   

Allen Electronegativity
1.85   
8
Not Available   

Electropositivity
  
  

Pauling Electropositivity
1.67   
99+
2.64   
25

Ionization Energies
  
  

1st Energy Level
715.60 kJ/mol   
31
604.50 kJ/mol   
99+

2nd Energy Level
1,450.50 kJ/mol   
99+
1,128.00 kJ/mol   
99+

3rd Energy Level
3,081.50 kJ/mol   
23
1,997.00 kJ/mol   
99+

4th Energy Level
4,083.00 kJ/mol   
35
3,242.00 kJ/mol   
99+

5th Energy Level
6,640.00 kJ/mol   
20
Not Available   

Electrochemical Equivalent
3.87 g/amp-hr   
9
1.77 g/amp-hr   
39

Electron Work Function
4.25 eV   
21
Not Available   

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

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