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Chemical Properties of Samarium and 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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