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Chemical Properties of Protactinium and Terbium

Protactinium
Terbium
Chemical Properties of Terbium and Protactinium


Chemical Properties
Chemical Formula
Pa   
Tb   
Isotopes
  
  
Known Isotopes
27   
12
26   
13
Electronegativity
  
  
Pauling Electronegativity
1.50   
27
Not Available   
Allred Rochow Electronegativity
1.14   
28
1.10   
30
Electropositivity
  
  
Pauling Electropositivity
2.50   
27
Not Available   
Ionization Energies
  
  
1st Energy Level
568.00 kJ/mol   
99+
603.40 kJ/mol   
99+
2nd Energy Level
1,128.00 kJ/mol   
99+
1,174.80 kJ/mol   
99+
3rd Energy Level
1,814.00 kJ/mol   
99+
2,417.00 kJ/mol   
99+
4th Energy Level
2,991.00 kJ/mol   
99+
4,203.00 kJ/mol   
31
Electrochemical Equivalent
1.72 g/amp-hr   
99+
1.98 g/amp-hr   
31
Electron Work Function
Not Available   
3.00 eV   
36
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Ionization, Radioactive Isotopes, Solubility   
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