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Chemical Properties of Tantalum and Europium

Tantalum
Europium
Chemical Properties of Europium and Tantalum


Chemical Properties
Chemical Formula
Ta   
Eu   
Isotopes
  
  
Known Isotopes
31   
8
31   
8
Electronegativity
  
  
Pauling Electronegativity
1.50   
27
1.20   
39
Sanderson Electronegativity
Not Available   
1.01   
22
Allred Rochow Electronegativity
1.33   
22
Not Available   
Allen Electronegativity
1.34   
33
Not Available   
Electropositivity
  
  
Pauling Electropositivity
2.50   
27
Not Available   
Ionization Energies
  
  
1st Energy Level
761.00 kJ/mol   
18
547.10 kJ/mol   
99+
2nd Energy Level
1,500.00 kJ/mol   
40
1,085.00 kJ/mol   
99+
3rd Energy Level
Not Available   
2,404.00 kJ/mol   
99+
4th Energy Level
Not Available   
4,120.00 kJ/mol   
33
Electrochemical Equivalent
1.35 g/amp-hr   
99+
1.89 g/amp-hr   
33
Electron Work Function
4.25 eV   
21
2.50 eV   
99+
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Ionization, Radioactive Isotopes, Solubility   
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