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Chemical Properties of Tantalum and Thorium

Tantalum
Thorium
Chemical Properties of Thorium and Tantalum


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