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Chemical Properties of Tantalum and Actinium

Tantalum
Actinium
Chemical Properties of Actinium and Tantalum


Chemical Properties
Chemical Formula
Ta   
Ac   
Isotopes
  
  
Known Isotopes
31   
8
29   
10
Electronegativity
  
  
Pauling Electronegativity
1.50   
27
1.10   
99+
Allred Rochow Electronegativity
1.33   
22
1.00   
36
Allen Electronegativity
1.34   
33
Not Available   
Electropositivity
  
  
Pauling Electropositivity
2.50   
27
2.90   
10
Ionization Energies
  
  
1st Energy Level
761.00 kJ/mol   
18
499.00 kJ/mol   
99+
2nd Energy Level
1,500.00 kJ/mol   
40
1,170.00 kJ/mol   
99+
3rd Energy Level
Not Available   
1,900.00 kJ/mol   
99+
4th Energy Level
Not Available   
4,700.00 kJ/mol   
23
Electrochemical Equivalent
1.35 g/amp-hr   
99+
2.82 g/amp-hr   
18
Electron Work Function
4.25 eV   
21
Not Available   
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
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