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Chemical Properties of Ytterbium and Protactinium

Ytterbium
Protactinium
Chemical Properties of Protactinium and Ytterbium


Chemical Properties
Chemical Formula
Yb   
Pa   
Isotopes
  
  
Known Isotopes
30   
9
27   
12
Electronegativity
  
  
Pauling Electronegativity
Not Available   
1.50   
27
Allred Rochow Electronegativity
1.06   
33
1.14   
28
Electropositivity
  
  
Pauling Electropositivity
Not Available   
2.50   
27
Ionization Energies
  
  
1st Energy Level
603.40 kJ/mol   
99+
568.00 kJ/mol   
99+
2nd Energy Level
1,174.80 kJ/mol   
99+
1,128.00 kJ/mol   
99+
3rd Energy Level
2,417.00 kJ/mol   
99+
1,814.00 kJ/mol   
99+
4th Energy Level
4,203.00 kJ/mol   
31
2,991.00 kJ/mol   
99+
Electrochemical Equivalent
2.15 g/amp-hr   
25
1.72 g/amp-hr   
99+
Electron Work Function
Not Available   
Not Available   
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes, Radioactivity   
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