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Chemical Properties of Francium and Lanthanum


Chemical Properties of Lanthanum and Francium


Chemical Properties

Chemical Formula
Fr   
La   

Isotopes
  
  

Known Isotopes
33   
6
31   
8

Electronegativity
  
  

Pauling Electronegativity
0.70   
99+
1.10   
99+

Allred Rochow Electronegativity
0.86   
99+
1.08   
31

Mulliken-Jaffe Electronegativity
0.68   
25
Not Available   

Allen Electronegativity
0.67   
99+
Not Available   

Electropositivity
  
  

Pauling Electropositivity
3.30   
1
2.90   
10

Ionization Energies
  
  

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

2nd Energy Level
Not Available   
1,067.00 kJ/mol   
99+

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

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

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

Electrochemical Equivalent
8.32 g/amp-hr   
1
1.73 g/amp-hr   
99+

Electron Work Function
Not Available   
3.50 eV   
31

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

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