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Chemical Properties of Promethium and Polonium

Promethium
Polonium
Chemical Properties of Polonium and Promethium


Chemical Properties
Chemical Formula
Pm   
Po   
Isotopes
  
  
Known Isotopes
27   
12
29   
10
Electronegativity
  
  
Pauling Electronegativity
Not Available   
2.00   
7
Allred Rochow Electronegativity
1.07   
32
1.76   
2
Mulliken-Jaffe Electronegativity
Not Available   
2.48   
1
Allen Electronegativity
Not Available   
2.19   
2
Electropositivity
  
  
Pauling Electropositivity
Not Available   
2.00   
99+
Ionization Energies
  
  
1st Energy Level
540.00 kJ/mol   
99+
812.10 kJ/mol   
14
2nd Energy Level
1,050.00 kJ/mol   
99+
Not Available   
3rd Energy Level
2,150.00 kJ/mol   
99+
Not Available   
4th Energy Level
3,970.00 kJ/mol   
38
Not Available   
Electrochemical Equivalent
1.80 g/amp-hr   
36
3.90 g/amp-hr   
8
Electron Work Function
Not Available   
Not Available   
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes, Solubility   
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Lanthanide Metals

Lanthanide Metals

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