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Chemical Properties of Lanthanum and Thallium

Lanthanum
Thallium
Chemical Properties of Thallium and Lanthanum


Chemical Properties
Chemical Formula
La   
Tl   
Isotopes
  
  
Known Isotopes
31   
8
32   
7
Electronegativity
  
  
Pauling Electronegativity
1.10   
99+
1.62   
21
Sanderson Electronegativity
Not Available   
2.25   
5
Allred Rochow Electronegativity
1.08   
31
1.44   
17
Mulliken-Jaffe Electronegativity
Not Available   
1.96   
6
Allen Electronegativity
Not Available   
1.79   
13
Electropositivity
  
  
Pauling Electropositivity
2.90   
10
2.38   
33
Ionization Energies
  
  
1st Energy Level
538.10 kJ/mol   
99+
589.40 kJ/mol   
99+
2nd Energy Level
1,067.00 kJ/mol   
99+
1,971.00 kJ/mol   
14
3rd Energy Level
1,850.30 kJ/mol   
99+
2,878.00 kJ/mol   
32
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+
7.63 g/amp-hr   
2
Electron Work Function
3.50 eV   
31
3.84 eV   
28
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Corrosion, Ionization, Radioactive Isotopes, Solubility   
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