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Chemical Properties of Protactinium and Lead

Protactinium
Lead
Chemical Properties of Lead and Protactinium


Chemical Properties
Chemical Formula
Pa   
Pb   
Isotopes
  
  
Known Isotopes
27   
12
35   
4
Electronegativity
  
  
Pauling Electronegativity
1.50   
27
1.87   
13
Sanderson Electronegativity
Not Available   
2.29   
4
Allred Rochow Electronegativity
1.14   
28
1.55   
11
Mulliken-Jaffe Electronegativity
Not Available   
2.41   
2
Allen Electronegativity
Not Available   
1.85   
8
Electropositivity
  
  
Pauling Electropositivity
2.50   
27
1.67   
99+
Ionization Energies
  
  
1st Energy Level
568.00 kJ/mol   
99+
715.60 kJ/mol   
31
2nd Energy Level
1,128.00 kJ/mol   
99+
1,450.50 kJ/mol   
99+
3rd Energy Level
1,814.00 kJ/mol   
99+
3,081.50 kJ/mol   
23
4th Energy Level
2,991.00 kJ/mol   
99+
4,083.00 kJ/mol   
35
5th Energy Level
Not Available   
6,640.00 kJ/mol   
20
Electrochemical Equivalent
1.72 g/amp-hr   
99+
3.87 g/amp-hr   
9
Electron Work Function
Not Available   
4.25 eV   
21
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Anti Corrosion, Ionization, Radioactive Isotopes   
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