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Chemical Properties of Barium and Protactinium

Barium
Protactinium
Chemical Properties of Protactinium and Barium


Chemical Properties
Chemical Formula
Ba   
Pa   
Isotopes
  
  
Known Isotopes
37   
2
27   
12
Electronegativity
  
  
Pauling Electronegativity
0.89   
99+
1.50   
27
Sanderson Electronegativity
0.68   
28
Not Available   
Allred Rochow Electronegativity
0.97   
38
1.14   
28
Mulliken-Jaffe Electronegativity
0.88   
22
Not Available   
Allen Electronegativity
0.88   
99+
Not Available   
Electropositivity
  
  
Pauling Electropositivity
3.11   
4
2.50   
27
Ionization Energies
  
  
1st Energy Level
502.90 kJ/mol   
99+
568.00 kJ/mol   
99+
2nd Energy Level
965.20 kJ/mol   
99+
1,128.00 kJ/mol   
99+
3rd Energy Level
3,600.00 kJ/mol   
14
1,814.00 kJ/mol   
99+
4th Energy Level
Not Available   
2,991.00 kJ/mol   
99+
Electrochemical Equivalent
2.56 g/amp-hr   
20
1.72 g/amp-hr   
99+
Electron Work Function
2.70 eV   
99+
Not Available   
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Ionization, Radioactive Isotopes, Radioactivity   
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