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Chemical Properties of Protactinium and Barium

Protactinium
Barium
Chemical Properties of Barium and Protactinium


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