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Chemical Properties of Radium and Iridium

Radium
Iridium
Chemical Properties of Iridium and Radium


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