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Chemical Properties of Thorium and Actinium

Thorium
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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