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Chemical Properties of Rhenium and Neptunium

Rhenium
Neptunium
Chemical Properties of Neptunium and Rhenium


Chemical Properties
Chemical Formula
Re   
Np   
Isotopes
  
  
Known Isotopes
33   
6
20   
19
Electronegativity
  
  
Pauling Electronegativity
1.90   
11
1.36   
29
Allred Rochow Electronegativity
1.46   
15
1.22   
26
Allen Electronegativity
1.60   
21
Not Available   
Electropositivity
  
  
Pauling Electropositivity
2.10   
99+
2.64   
25
Ionization Energies
  
  
1st Energy Level
760.00 kJ/mol   
20
604.50 kJ/mol   
99+
2nd Energy Level
1,260.00 kJ/mol   
99+
1,128.00 kJ/mol   
99+
3rd Energy Level
2,510.00 kJ/mol   
99+
1,997.00 kJ/mol   
99+
4th Energy Level
3,640.00 kJ/mol   
99+
3,242.00 kJ/mol   
99+
Electrochemical Equivalent
0.99 g/amp-hr   
99+
1.77 g/amp-hr   
39
Electron Work Function
4.96 eV   
7
Not Available   
Other Chemical Properties
Corrosion, Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
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