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Chemical Properties of Thorium and Radium

Thorium
Radium
Chemical Properties of Radium and Thorium


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