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Chemical Properties of Neptunium and Gold

Neptunium
Gold
Chemical Properties of Gold and Neptunium


Chemical Properties
Chemical Formula
Np   
Au   
Isotopes
  
  
Known Isotopes
20   
19
36   
3
Electronegativity
  
  
Pauling Electronegativity
1.36   
29
2.54   
1
Allred Rochow Electronegativity
1.22   
26
1.42   
18
Mulliken-Jaffe Electronegativity
Not Available   
1.87   
7
Allen Electronegativity
Not Available   
1.92   
5
Electropositivity
  
  
Pauling Electropositivity
2.64   
25
1.46   
99+
Ionization Energies
  
  
1st Energy Level
604.50 kJ/mol   
99+
890.10 kJ/mol   
8
2nd Energy Level
1,128.00 kJ/mol   
99+
1,980.00 kJ/mol   
12
3rd Energy Level
1,997.00 kJ/mol   
99+
Not Available   
4th Energy Level
3,242.00 kJ/mol   
99+
Not Available   
Electrochemical Equivalent
1.77 g/amp-hr   
39
2.45 g/amp-hr   
21
Electron Work Function
Not Available   
5.10 eV   
4
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Chemical Stability, Ionization, Solubility   
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