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Chemical Properties of Praseodymium and Erbium

Praseodymium
Erbium
Chemical Properties of Erbium and Praseodymium


Chemical Properties
Chemical Formula
Pr   
Er   
Isotopes
  
  
Known Isotopes
31   
8
31   
8
Electronegativity
  
  
Pauling Electronegativity
1.13   
99+
1.24   
36
Allred Rochow Electronegativity
1.07   
32
1.11   
29
Electropositivity
  
  
Pauling Electropositivity
2.87   
12
2.76   
18
Ionization Energies
  
  
1st Energy Level
527.00 kJ/mol   
99+
589.30 kJ/mol   
99+
2nd Energy Level
1,020.00 kJ/mol   
99+
1,150.00 kJ/mol   
99+
3rd Energy Level
2,086.00 kJ/mol   
99+
2,194.00 kJ/mol   
99+
4th Energy Level
3,761.00 kJ/mol   
99+
4,120.00 kJ/mol   
33
5th Energy Level
5,551.00 kJ/mol   
29
Not Available   
Electrochemical Equivalent
1.75 g/amp-hr   
40
2.08 g/amp-hr   
28
Electron Work Function
2.70 eV   
99+
Not Available   
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes   
Ionization, Radioactive Isotopes, Solubility   
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