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Chemical Properties of Thallium and Lanthanum

Thallium
Lanthanum
Chemical Properties of Lanthanum and Thallium


Chemical Properties
Chemical Formula
Tl   
La   
Isotopes
  
  
Known Isotopes
32   
7
31   
8
Electronegativity
  
  
Pauling Electronegativity
1.62   
21
1.10   
99+
Sanderson Electronegativity
2.25   
5
Not Available   
Allred Rochow Electronegativity
1.44   
17
1.08   
31
Mulliken-Jaffe Electronegativity
1.96   
6
Not Available   
Allen Electronegativity
1.79   
13
Not Available   
Electropositivity
  
  
Pauling Electropositivity
2.38   
33
2.90   
10
Ionization Energies
  
  
1st Energy Level
589.40 kJ/mol   
99+
538.10 kJ/mol   
99+
2nd Energy Level
1,971.00 kJ/mol   
14
1,067.00 kJ/mol   
99+
3rd Energy Level
2,878.00 kJ/mol   
32
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
7.63 g/amp-hr   
2
1.73 g/amp-hr   
99+
Electron Work Function
3.84 eV   
28
3.50 eV   
31
Other Chemical Properties
Corrosion, Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes, Solubility   
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