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Chemical Properties of Protactinium and Ytterbium

Protactinium
Ytterbium
Chemical Properties of Ytterbium and Protactinium


Chemical Properties
Chemical Formula
Pa   
Yb   
Isotopes
  
  
Known Isotopes
27   
12
30   
9
Electronegativity
  
  
Pauling Electronegativity
1.50   
27
Not Available   
Allred Rochow Electronegativity
1.14   
28
1.06   
33
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+
2.15 g/amp-hr   
25
Electron Work Function
Not Available   
Not Available   
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Ionization, Radioactive Isotopes, Solubility   
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