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Chemical Properties of Thorium and Praseodymium

Thorium
Praseodymium
Chemical Properties of Praseodymium and Thorium


Chemical Properties
Chemical Formula
Th   
Pr   
Isotopes
  
  
Known Isotopes
28   
11
31   
8
Electronegativity
  
  
Pauling Electronegativity
1.30   
32
1.13   
99+
Allred Rochow Electronegativity
1.11   
29
1.07   
32
Electropositivity
  
  
Pauling Electropositivity
2.70   
22
2.87   
12
Ionization Energies
  
  
1st Energy Level
587.00 kJ/mol   
99+
527.00 kJ/mol   
99+
2nd Energy Level
1,110.00 kJ/mol   
99+
1,020.00 kJ/mol   
99+
3rd Energy Level
1,978.00 kJ/mol   
99+
2,086.00 kJ/mol   
99+
4th Energy Level
2,780.00 kJ/mol   
99+
3,761.00 kJ/mol   
99+
5th Energy Level
Not Available   
5,551.00 kJ/mol   
29
Electrochemical Equivalent
2.16 g/amp-hr   
24
1.75 g/amp-hr   
40
Electron Work Function
3.41 eV   
32
2.70 eV   
99+
Other Chemical Properties
Corrosion, Ionization, Radioactive Isotopes, Radioactivity   
Anti Corrosion, Ionization, Radioactive Isotopes   
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