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Chemical Properties of Osmium and Promethium

Osmium
Promethium
Chemical Properties of Promethium and Osmium


Chemical Properties
Chemical Formula
Os   
Pm   
Isotopes
  
  
Known Isotopes
35   
4
27   
12
Electronegativity
  
  
Pauling Electronegativity
2.20   
4
Not Available   
Allred Rochow Electronegativity
1.52   
12
1.07   
32
Allen Electronegativity
1.65   
19
Not Available   
Electropositivity
  
  
Pauling Electropositivity
1.80   
99+
Not Available   
Ionization Energies
  
  
1st Energy Level
840.00 kJ/mol   
12
540.00 kJ/mol   
99+
2nd Energy Level
1,309.80 kJ/mol   
99+
1,050.00 kJ/mol   
99+
3rd Energy Level
1,600.00 kJ/mol   
99+
2,150.00 kJ/mol   
99+
4th Energy Level
Not Available   
3,970.00 kJ/mol   
38
Electrochemical Equivalent
1.77 g/amp-hr   
38
1.80 g/amp-hr   
36
Electron Work Function
4.83 eV   
8
Not Available   
Other Chemical Properties
Chemical Stability, Ionization, Solubility   
Ionization, Radioactive Isotopes, Solubility   
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