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Chemical Properties of Lead and Promethium

Lead
Promethium
Chemical Properties of Promethium and Lead


Chemical Properties
Chemical Formula
Pb   
Pm   
Isotopes
  
  
Known Isotopes
35   
4
27   
12
Electronegativity
  
  
Pauling Electronegativity
1.87   
13
Not Available   
Sanderson Electronegativity
2.29   
4
Not Available   
Allred Rochow Electronegativity
1.55   
11
1.07   
32
Mulliken-Jaffe Electronegativity
2.41   
2
Not Available   
Allen Electronegativity
1.85   
8
Not Available   
Electropositivity
  
  
Pauling Electropositivity
1.67   
99+
Not Available   
Ionization Energies
  
  
1st Energy Level
715.60 kJ/mol   
31
540.00 kJ/mol   
99+
2nd Energy Level
1,450.50 kJ/mol   
99+
1,050.00 kJ/mol   
99+
3rd Energy Level
3,081.50 kJ/mol   
23
2,150.00 kJ/mol   
99+
4th Energy Level
4,083.00 kJ/mol   
35
3,970.00 kJ/mol   
38
5th Energy Level
6,640.00 kJ/mol   
20
Not Available   
Electrochemical Equivalent
3.87 g/amp-hr   
9
1.80 g/amp-hr   
36
Electron Work Function
4.25 eV   
21
Not Available   
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes   
Ionization, Radioactive Isotopes, Solubility   
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