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Chemical Properties of Europium and Samarium


Chemical Properties of Samarium and Europium


Chemical Properties

Chemical Formula
Eu   
Sm   

Isotopes
  
  

Known Isotopes
31   
8
30   
9

Electronegativity
  
  

Pauling Electronegativity
1.20   
39
1.17   
40

Sanderson Electronegativity
1.01   
22
Not Available   

Allred Rochow Electronegativity
Not Available   
1.07   
32

Electropositivity
  
  

Pauling Electropositivity
Not Available   
2.83   
14

Ionization Energies
  
  

1st Energy Level
547.10 kJ/mol   
99+
544.50 kJ/mol   
99+

2nd Energy Level
1,085.00 kJ/mol   
99+
1,070.00 kJ/mol   
99+

3rd Energy Level
2,404.00 kJ/mol   
99+
2,260.00 kJ/mol   
99+

4th Energy Level
4,120.00 kJ/mol   
33
3,990.00 kJ/mol   
37

Electrochemical Equivalent
1.89 g/amp-hr   
33
1.87 g/amp-hr   
34

Electron Work Function
2.50 eV   
99+
2.70 eV   
99+

Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes   

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