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Chemical Properties of Lanthanum and Actinium


Chemical Properties of Actinium and Lanthanum


Chemical Properties

Chemical Formula
La   
Ac   

Isotopes
  
  

Known Isotopes
31   
8
29   
10

Electronegativity
  
  

Pauling Electronegativity
1.10   
99+
1.10   
99+

Allred Rochow Electronegativity
1.08   
31
1.00   
36

Electropositivity
  
  

Pauling Electropositivity
2.90   
10
2.90   
10

Ionization Energies
  
  

1st Energy Level
538.10 kJ/mol   
99+
499.00 kJ/mol   
99+

2nd Energy Level
1,067.00 kJ/mol   
99+
1,170.00 kJ/mol   
99+

3rd Energy Level
1,850.30 kJ/mol   
99+
1,900.00 kJ/mol   
99+

4th Energy Level
4,819.00 kJ/mol   
22
4,700.00 kJ/mol   
23

5th Energy Level
5,940.00 kJ/mol   
25
Not Available   

Electrochemical Equivalent
1.73 g/amp-hr   
99+
2.82 g/amp-hr   
18

Electron Work Function
3.50 eV   
31
Not Available   

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

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