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Chemical Properties of Gold and Neptunium

Gold
Neptunium
Chemical Properties of Neptunium and Gold


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