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Chemical Properties of Iridium and Radium

Iridium
Radium
Chemical Properties of Radium and Iridium


Chemical Properties
Chemical Formula
Ir   
Ra   
Isotopes
  
  
Known Isotopes
34   
5
33   
6
Electronegativity
  
  
Pauling Electronegativity
2.20   
4
0.90   
99+
Allred Rochow Electronegativity
1.55   
11
0.97   
38
Mulliken-Jaffe Electronegativity
Not Available   
0.92   
20
Allen Electronegativity
1.68   
17
0.89   
99+
Electropositivity
  
  
Pauling Electropositivity
1.80   
99+
3.10   
5
Ionization Energies
  
  
1st Energy Level
880.00 kJ/mol   
9
509.30 kJ/mol   
99+
2nd Energy Level
1,600.00 kJ/mol   
35
979.00 kJ/mol   
99+
Electrochemical Equivalent
1.14 g/amp-hr   
99+
4.22 g/amp-hr   
6
Electron Work Function
4.55 eV   
13
Not Available   
Other Chemical Properties
Flammable, Ionization, Radioactive Isotopes, Radioactivity   
Ionization, Radioactive Isotopes, Radioactivity   
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