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Chemical Properties of Cesium and Neptunium

Cesium
Neptunium
Chemical Properties of Neptunium and Cesium


Chemical Properties
Chemical Formula
Cs   
Np   
Isotopes
  
  
Known Isotopes
36   
3
20   
19
Electronegativity
  
  
Pauling Electronegativity
0.79   
99+
1.36   
29
Sanderson Electronegativity
0.22   
33
Not Available   
Allred Rochow Electronegativity
0.86   
99+
1.22   
26
Mulliken-Jaffe Electronegativity
0.62   
26
Not Available   
Allen Electronegativity
0.66   
99+
Not Available   
Electropositivity
  
  
Pauling Electropositivity
3.21   
2
2.64   
25
Ionization Energies
  
  
1st Energy Level
375.70 kJ/mol   
99+
604.50 kJ/mol   
99+
2nd Energy Level
2,234.30 kJ/mol   
8
1,128.00 kJ/mol   
99+
3rd Energy Level
3,400.00 kJ/mol   
16
1,997.00 kJ/mol   
99+
4th Energy Level
Not Available   
3,242.00 kJ/mol   
99+
Electrochemical Equivalent
4.96 g/amp-hr   
3
1.77 g/amp-hr   
39
Electron Work Function
2.14 eV   
99+
Not Available   
Other Chemical Properties
Chemical Stability, Corrosion, Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
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