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Chemical Properties of Tantalum and Iridium

Tantalum
Iridium
Chemical Properties of Iridium and Tantalum


Chemical Properties
Chemical Formula
Ta   
Ir   
Isotopes
  
  
Known Isotopes
31   
8
34   
5
Electronegativity
  
  
Pauling Electronegativity
1.50   
27
2.20   
4
Allred Rochow Electronegativity
1.33   
22
1.55   
11
Allen Electronegativity
1.34   
33
1.68   
17
Electropositivity
  
  
Pauling Electropositivity
2.50   
27
1.80   
99+
Ionization Energies
  
  
1st Energy Level
761.00 kJ/mol   
18
880.00 kJ/mol   
9
2nd Energy Level
1,500.00 kJ/mol   
40
1,600.00 kJ/mol   
35
Electrochemical Equivalent
1.35 g/amp-hr   
99+
1.14 g/amp-hr   
99+
Electron Work Function
4.25 eV   
21
4.55 eV   
13
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Flammable, Ionization, Radioactive Isotopes, Radioactivity   
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