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Chemical Properties of Protactinium and Uranium

Protactinium
Uranium
Chemical Properties of Uranium and Protactinium


Chemical Properties
Chemical Formula
Pa   
U   
Isotopes
  
  
Known Isotopes
27   
12
25   
14
Electronegativity
  
  
Pauling Electronegativity
1.50   
27
1.38   
28
Allred Rochow Electronegativity
1.14   
28
1.22   
26
Electropositivity
  
  
Pauling Electropositivity
2.50   
27
2.62   
26
Ionization Energies
  
  
1st Energy Level
568.00 kJ/mol   
99+
597.60 kJ/mol   
99+
2nd Energy Level
1,128.00 kJ/mol   
99+
1,420.00 kJ/mol   
99+
3rd Energy Level
1,814.00 kJ/mol   
99+
1,900.00 kJ/mol   
99+
4th Energy Level
2,991.00 kJ/mol   
99+
3,145.00 kJ/mol   
99+
Electrochemical Equivalent
1.72 g/amp-hr   
99+
1.48 g/amp-hr   
99+
Electron Work Function
Not Available   
3.63 eV   
30
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Ionization, Radioactive Isotopes, Radioactivity   
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