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Chemical Properties of Neptunium and Francium

Neptunium
Francium
Chemical Properties of Francium and Neptunium


Chemical Properties
Chemical Formula
Np   
Fr   
Isotopes
  
  
Known Isotopes
20   
19
33   
6
Electronegativity
  
  
Pauling Electronegativity
1.36   
29
0.70   
99+
Allred Rochow Electronegativity
1.22   
26
0.86   
99+
Mulliken-Jaffe Electronegativity
Not Available   
0.68   
25
Allen Electronegativity
Not Available   
0.67   
99+
Electropositivity
  
  
Pauling Electropositivity
2.64   
25
3.30   
1
Ionization Energies
  
  
1st Energy Level
604.50 kJ/mol   
99+
380.00 kJ/mol   
99+
2nd Energy Level
1,128.00 kJ/mol   
99+
Not Available   
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
8.32 g/amp-hr   
1
Electron Work Function
Not Available   
Not Available   
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
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