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Chemical Properties of Thallium and Protactinium


Chemical Properties of Protactinium and Thallium


Chemical Properties

Chemical Formula
Tl   
Pa   

Isotopes
  
  

Known Isotopes
32   
7
27   
12

Electronegativity
  
  

Pauling Electronegativity
1.62   
21
1.50   
27

Sanderson Electronegativity
2.25   
5
Not Available   

Allred Rochow Electronegativity
1.44   
17
1.14   
28

Mulliken-Jaffe Electronegativity
1.96   
6
Not Available   

Allen Electronegativity
1.79   
13
Not Available   

Electropositivity
  
  

Pauling Electropositivity
2.38   
33
2.50   
27

Ionization Energies
  
  

1st Energy Level
589.40 kJ/mol   
99+
568.00 kJ/mol   
99+

2nd Energy Level
1,971.00 kJ/mol   
14
1,128.00 kJ/mol   
99+

3rd Energy Level
2,878.00 kJ/mol   
32
1,814.00 kJ/mol   
99+

4th Energy Level
Not Available   
2,991.00 kJ/mol   
99+

Electrochemical Equivalent
7.63 g/amp-hr   
2
1.72 g/amp-hr   
99+

Electron Work Function
3.84 eV   
28
Not Available   

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

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