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Chemical Properties of Radium and Thorium

Radium
Thorium
Chemical Properties of Thorium and Radium


Chemical Properties
Chemical Formula
Ra   
Th   
Isotopes
  
  
Known Isotopes
33   
6
28   
11
Electronegativity
  
  
Pauling Electronegativity
0.90   
99+
1.30   
32
Allred Rochow Electronegativity
0.97   
38
1.11   
29
Mulliken-Jaffe Electronegativity
0.92   
20
Not Available   
Allen Electronegativity
0.89   
99+
Not Available   
Electropositivity
  
  
Pauling Electropositivity
3.10   
5
2.70   
22
Ionization Energies
  
  
1st Energy Level
509.30 kJ/mol   
99+
587.00 kJ/mol   
99+
2nd Energy Level
979.00 kJ/mol   
99+
1,110.00 kJ/mol   
99+
3rd Energy Level
Not Available   
1,978.00 kJ/mol   
99+
4th Energy Level
Not Available   
2,780.00 kJ/mol   
99+
Electrochemical Equivalent
4.22 g/amp-hr   
6
2.16 g/amp-hr   
24
Electron Work Function
Not Available   
3.41 eV   
32
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Corrosion, Ionization, Radioactive Isotopes, Radioactivity   
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