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Chemical Properties of Promethium and Cesium

Promethium
Cesium
Chemical Properties of Cesium and Promethium


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