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Chemical Properties of Erbium and Berkelium

Erbium
Berkelium
Chemical Properties of Berkelium and Erbium


Chemical Properties
Chemical Formula
Er   
Bk   
Isotopes
  
  
Known Isotopes
31   
8
14   
25
Electronegativity
  
  
Pauling Electronegativity
1.24   
36
1.30   
32
Allred Rochow Electronegativity
1.11   
29
1.20   
27
Allen Electronegativity
Not Available   
2.70   
1
Electropositivity
  
  
Pauling Electropositivity
2.76   
18
2.70   
22
Ionization Energies
  
  
1st Energy Level
589.30 kJ/mol   
99+
601.00 kJ/mol   
99+
2nd Energy Level
1,150.00 kJ/mol   
99+
1,186.00 kJ/mol   
99+
3rd Energy Level
2,194.00 kJ/mol   
99+
2,152.00 kJ/mol   
99+
4th Energy Level
4,120.00 kJ/mol   
33
3,434.00 kJ/mol   
99+
Electrochemical Equivalent
2.08 g/amp-hr   
28
3.07 g/amp-hr   
16
Electron Work Function
Not Available   
Not Available   
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes, Radioactivity   
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