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Chemical Properties of Samarium and Actinium

Samarium
Actinium
Chemical Properties of Actinium and Samarium


Chemical Properties
Chemical Formula
Sm   
Ac   
Isotopes
  
  
Known Isotopes
30   
9
29   
10
Electronegativity
  
  
Pauling Electronegativity
1.17   
40
1.10   
99+
Allred Rochow Electronegativity
1.07   
32
1.00   
36
Electropositivity
  
  
Pauling Electropositivity
2.83   
14
2.90   
10
Ionization Energies
  
  
1st Energy Level
544.50 kJ/mol   
99+
499.00 kJ/mol   
99+
2nd Energy Level
1,070.00 kJ/mol   
99+
1,170.00 kJ/mol   
99+
3rd Energy Level
2,260.00 kJ/mol   
99+
1,900.00 kJ/mol   
99+
4th Energy Level
3,990.00 kJ/mol   
37
4,700.00 kJ/mol   
23
Electrochemical Equivalent
1.87 g/amp-hr   
34
2.82 g/amp-hr   
18
Electron Work Function
2.70 eV   
99+
Not Available   
Other Chemical Properties
Ionization, Radioactive Isotopes   
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
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