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Chemical Properties of Lutetium and Protactinium

Lutetium
Protactinium
Chemical Properties of Protactinium and Lutetium


Chemical Properties
Chemical Formula
Lu   
Pa   
Isotopes
  
  
Known Isotopes
35   
4
27   
12
Electronegativity
  
  
Pauling Electronegativity
1.27   
34
1.50   
27
Allred Rochow Electronegativity
1.14   
28
1.14   
28
Electropositivity
  
  
Pauling Electropositivity
2.73   
20
2.50   
27
Ionization Energies
  
  
1st Energy Level
523.50 kJ/mol   
99+
568.00 kJ/mol   
99+
2nd Energy Level
1,340.00 kJ/mol   
99+
1,128.00 kJ/mol   
99+
3rd Energy Level
2,022.30 kJ/mol   
99+
1,814.00 kJ/mol   
99+
4th Energy Level
4,370.00 kJ/mol   
28
2,991.00 kJ/mol   
99+
5th Energy Level
6,445.00 kJ/mol   
21
Not Available   
Electrochemical Equivalent
2.18 g/amp-hr   
23
1.72 g/amp-hr   
99+
Electron Work Function
3.30 eV   
33
Not Available   
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes, Radioactivity   
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