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Chemical Properties of Praseodymium and Lanthanum

Praseodymium
Lanthanum
Chemical Properties of Lanthanum and Praseodymium


Chemical Properties
Chemical Formula
Pr   
La   
Isotopes
  
  
Known Isotopes
31   
8
31   
8
Electronegativity
  
  
Pauling Electronegativity
1.13   
99+
1.10   
99+
Allred Rochow Electronegativity
1.07   
32
1.08   
31
Electropositivity
  
  
Pauling Electropositivity
2.87   
12
2.90   
10
Ionization Energies
  
  
1st Energy Level
527.00 kJ/mol   
99+
538.10 kJ/mol   
99+
2nd Energy Level
1,020.00 kJ/mol   
99+
1,067.00 kJ/mol   
99+
3rd Energy Level
2,086.00 kJ/mol   
99+
1,850.30 kJ/mol   
99+
4th Energy Level
3,761.00 kJ/mol   
99+
4,819.00 kJ/mol   
22
5th Energy Level
5,551.00 kJ/mol   
29
5,940.00 kJ/mol   
25
Electrochemical Equivalent
1.75 g/amp-hr   
40
1.73 g/amp-hr   
99+
Electron Work Function
2.70 eV   
99+
3.50 eV   
31
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes   
Ionization, Radioactive Isotopes, Solubility   
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