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Chemical Properties of Holmium and Promethium

Holmium
Promethium
Chemical Properties of Promethium and Holmium


Chemical Properties
Chemical Formula
Ho   
Pm   
Isotopes
  
  
Known Isotopes
34   
5
27   
12
Electronegativity
  
  
Pauling Electronegativity
1.23   
37
Not Available   
Allred Rochow Electronegativity
1.10   
30
1.07   
32
Electropositivity
  
  
Pauling Electropositivity
2.77   
17
Not Available   
Ionization Energies
  
  
1st Energy Level
581.00 kJ/mol   
99+
540.00 kJ/mol   
99+
2nd Energy Level
1,140.00 kJ/mol   
99+
1,050.00 kJ/mol   
99+
3rd Energy Level
2,204.00 kJ/mol   
99+
2,150.00 kJ/mol   
99+
4th Energy Level
4,100.00 kJ/mol   
34
3,970.00 kJ/mol   
38
Electrochemical Equivalent
2.02 g/amp-hr   
29
1.80 g/amp-hr   
36
Electron Work Function
Not Available   
Not Available   
Other Chemical Properties
Chemical Stability, Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes, Solubility   
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