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Chemical Properties of Tantalum and Americium

Tantalum
Americium
Chemical Properties of Americium and Tantalum


Chemical Properties
Chemical Formula
Ta   
Am   
Isotopes
  
  
Known Isotopes
31   
8
16   
23
Electronegativity
  
  
Pauling Electronegativity
1.50   
27
1.30   
32
Allred Rochow Electronegativity
1.33   
22
1.20   
27
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
578.00 kJ/mol   
99+
2nd Energy Level
1,500.00 kJ/mol   
40
1,158.00 kJ/mol   
99+
3rd Energy Level
Not Available   
2,132.00 kJ/mol   
99+
4th Energy Level
Not Available   
3,493.00 kJ/mol   
99+
Electrochemical Equivalent
1.35 g/amp-hr   
99+
3.02 g/amp-hr   
17
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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