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Chemical Properties of Neptunium and Thallium

Neptunium
Thallium
Chemical Properties of Thallium and Neptunium


Chemical Properties
Chemical Formula
Np   
Tl   
Isotopes
  
  
Known Isotopes
20   
19
32   
7
Electronegativity
  
  
Pauling Electronegativity
1.36   
29
1.62   
21
Sanderson Electronegativity
Not Available   
2.25   
5
Allred Rochow Electronegativity
1.22   
26
1.44   
17
Mulliken-Jaffe Electronegativity
Not Available   
1.96   
6
Allen Electronegativity
Not Available   
1.79   
13
Electropositivity
  
  
Pauling Electropositivity
2.64   
25
2.38   
33
Ionization Energies
  
  
1st Energy Level
604.50 kJ/mol   
99+
589.40 kJ/mol   
99+
2nd Energy Level
1,128.00 kJ/mol   
99+
1,971.00 kJ/mol   
14
3rd Energy Level
1,997.00 kJ/mol   
99+
2,878.00 kJ/mol   
32
4th Energy Level
3,242.00 kJ/mol   
99+
Not Available   
Electrochemical Equivalent
1.77 g/amp-hr   
39
7.63 g/amp-hr   
2
Electron Work Function
Not Available   
3.84 eV   
28
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Corrosion, Ionization, Radioactive Isotopes, Solubility   
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