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Chemical Properties of Lanthanum and Radium


Chemical Properties of Radium and Lanthanum


Chemical Properties

Chemical Formula
La   
Ra   

Isotopes
  
  

Known Isotopes
31   
8
33   
6

Electronegativity
  
  

Pauling Electronegativity
1.10   
99+
0.90   
99+

Allred Rochow Electronegativity
1.08   
31
0.97   
38

Mulliken-Jaffe Electronegativity
Not Available   
0.92   
20

Allen Electronegativity
Not Available   
0.89   
99+

Electropositivity
  
  

Pauling Electropositivity
2.90   
10
3.10   
5

Ionization Energies
  
  

1st Energy Level
538.10 kJ/mol   
99+
509.30 kJ/mol   
99+

2nd Energy Level
1,067.00 kJ/mol   
99+
979.00 kJ/mol   
99+

3rd Energy Level
1,850.30 kJ/mol   
99+
Not Available   

4th Energy Level
4,819.00 kJ/mol   
22
Not Available   

5th Energy Level
5,940.00 kJ/mol   
25
Not Available   

Electrochemical Equivalent
1.73 g/amp-hr   
99+
4.22 g/amp-hr   
6

Electron Work Function
3.50 eV   
31
Not Available   

Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes, Radioactivity   

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