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Chemical Properties of Cesium and Promethium

Cesium
Promethium
Chemical Properties of Promethium and Cesium


Chemical Properties
Chemical Formula
Cs   
Pm   
Isotopes
  
  
Known Isotopes
36   
3
27   
12
Electronegativity
  
  
Pauling Electronegativity
0.79   
99+
Not Available   
Sanderson Electronegativity
0.22   
33
Not Available   
Allred Rochow Electronegativity
0.86   
99+
1.07   
32
Mulliken-Jaffe Electronegativity
0.62   
26
Not Available   
Allen Electronegativity
0.66   
99+
Not Available   
Electropositivity
  
  
Pauling Electropositivity
3.21   
2
Not Available   
Ionization Energies
  
  
1st Energy Level
375.70 kJ/mol   
99+
540.00 kJ/mol   
99+
2nd Energy Level
2,234.30 kJ/mol   
8
1,050.00 kJ/mol   
99+
3rd Energy Level
3,400.00 kJ/mol   
16
2,150.00 kJ/mol   
99+
4th Energy Level
Not Available   
3,970.00 kJ/mol   
38
Electrochemical Equivalent
4.96 g/amp-hr   
3
1.80 g/amp-hr   
36
Electron Work Function
2.14 eV   
99+
Not Available   
Other Chemical Properties
Chemical Stability, Corrosion, Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes, Solubility   
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