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Chemical Properties of Thorium and Actinium


Chemical Properties of Actinium and Thorium


Chemical Properties

Chemical Formula
Th   
Ac   

Isotopes
  
  

Known Isotopes
28   
11
29   
10

Electronegativity
  
  

Pauling Electronegativity
1.30   
32
1.10   
99+

Allred Rochow Electronegativity
1.11   
29
1.00   
36

Electropositivity
  
  

Pauling Electropositivity
2.70   
22
2.90   
10

Ionization Energies
  
  

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

2nd Energy Level
1,110.00 kJ/mol   
99+
1,170.00 kJ/mol   
99+

3rd Energy Level
1,978.00 kJ/mol   
99+
1,900.00 kJ/mol   
99+

4th Energy Level
2,780.00 kJ/mol   
99+
4,700.00 kJ/mol   
23

Electrochemical Equivalent
2.16 g/amp-hr   
24
2.82 g/amp-hr   
18

Electron Work Function
3.41 eV   
32
Not Available   

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

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