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Chemical Properties of Gadolinium and Promethium

Gadolinium
Promethium
Chemical Properties of Promethium and Gadolinium


Chemical Properties
Chemical Formula
Gd   
Pm   
Isotopes
  
  
Known Isotopes
26   
13
27   
12
Electronegativity
  
  
Pauling Electronegativity
1.20   
39
Not Available   
Allred Rochow Electronegativity
1.11   
29
1.07   
32
Electropositivity
  
  
Pauling Electropositivity
2.80   
15
Not Available   
Ionization Energies
  
  
1st Energy Level
593.40 kJ/mol   
99+
540.00 kJ/mol   
99+
2nd Energy Level
1,170.00 kJ/mol   
99+
1,050.00 kJ/mol   
99+
3rd Energy Level
1,990.00 kJ/mol   
99+
2,150.00 kJ/mol   
99+
4th Energy Level
4,250.00 kJ/mol   
30
3,970.00 kJ/mol   
38
Electrochemical Equivalent
1.96 g/amp-hr   
32
1.80 g/amp-hr   
36
Electron Work Function
3.10 eV   
35
Not Available   
Other Chemical Properties
Corrosion, Flammable, Ionization, Radioactive Isotopes   
Ionization, Radioactive Isotopes, Solubility   
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