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Chemical Properties of Lanthanum and Samarium

Lanthanum
Samarium
Chemical Properties of Samarium and Lanthanum


Chemical Properties
Chemical Formula
La   
Sm   
Isotopes
  
  
Known Isotopes
31   
8
30   
9
Electronegativity
  
  
Pauling Electronegativity
1.10   
99+
1.17   
40
Allred Rochow Electronegativity
1.08   
31
1.07   
32
Electropositivity
  
  
Pauling Electropositivity
2.90   
10
2.83   
14
Ionization Energies
  
  
1st Energy Level
538.10 kJ/mol   
99+
544.50 kJ/mol   
99+
2nd Energy Level
1,067.00 kJ/mol   
99+
1,070.00 kJ/mol   
99+
3rd Energy Level
1,850.30 kJ/mol   
99+
2,260.00 kJ/mol   
99+
4th Energy Level
4,819.00 kJ/mol   
22
3,990.00 kJ/mol   
37
5th Energy Level
5,940.00 kJ/mol   
25
Not Available   
Electrochemical Equivalent
1.73 g/amp-hr   
99+
1.87 g/amp-hr   
34
Electron Work Function
3.50 eV   
31
2.70 eV   
99+
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes   
Atomic >>
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