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Chemical Properties of Thorium and Tantalum

Thorium
Tantalum
Chemical Properties of Tantalum and Thorium


Chemical Properties
Chemical Formula
Th   
Ta   
Isotopes
  
  
Known Isotopes
28   
11
31   
8
Electronegativity
  
  
Pauling Electronegativity
1.30   
32
1.50   
27
Allred Rochow Electronegativity
1.11   
29
1.33   
22
Allen Electronegativity
Not Available   
1.34   
33
Electropositivity
  
  
Pauling Electropositivity
2.70   
22
2.50   
27
Ionization Energies
  
  
1st Energy Level
587.00 kJ/mol   
99+
761.00 kJ/mol   
18
2nd Energy Level
1,110.00 kJ/mol   
99+
1,500.00 kJ/mol   
40
3rd Energy Level
1,978.00 kJ/mol   
99+
Not Available   
4th Energy Level
2,780.00 kJ/mol   
99+
Not Available   
Electrochemical Equivalent
2.16 g/amp-hr   
24
1.35 g/amp-hr   
99+
Electron Work Function
3.41 eV   
32
4.25 eV   
21
Other Chemical Properties
Corrosion, Ionization, Radioactive Isotopes, Radioactivity   
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility   
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