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Chemical Properties of Iridium and Tantalum

Iridium
Tantalum
Chemical Properties of Tantalum and Iridium


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