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Chemical Properties of Lanthanum and Thorium


Chemical Properties of Thorium and Lanthanum


Chemical Properties

Chemical Formula
La   
Th   

Isotopes
  
  

Known Isotopes
31   
8
28   
11

Electronegativity
  
  

Pauling Electronegativity
1.10   
99+
1.30   
32

Allred Rochow Electronegativity
1.08   
31
1.11   
29

Electropositivity
  
  

Pauling Electropositivity
2.90   
10
2.70   
22

Ionization Energies
  
  

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

2nd Energy Level
1,067.00 kJ/mol   
99+
1,110.00 kJ/mol   
99+

3rd Energy Level
1,850.30 kJ/mol   
99+
1,978.00 kJ/mol   
99+

4th Energy Level
4,819.00 kJ/mol   
22
2,780.00 kJ/mol   
99+

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

Electrochemical Equivalent
1.73 g/amp-hr   
99+
2.16 g/amp-hr   
24

Electron Work Function
3.50 eV   
31
3.41 eV   
32

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

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