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Chemical Properties of Lanthanum and Technetium

Lanthanum
Technetium
Chemical Properties of Technetium and Lanthanum


Chemical Properties
Chemical Formula
La   
Tc   
Isotopes
  
  
Known Isotopes
31   
8
18   
21
Electronegativity
  
  
Pauling Electronegativity
1.10   
99+
1.90   
11
Allred Rochow Electronegativity
1.08   
31
1.36   
20
Allen Electronegativity
Not Available   
1.51   
28
Electropositivity
  
  
Pauling Electropositivity
2.90   
10
2.10   
99+
Ionization Energies
  
  
1st Energy Level
538.10 kJ/mol   
99+
702.00 kJ/mol   
36
2nd Energy Level
1,067.00 kJ/mol   
99+
1,470.00 kJ/mol   
99+
3rd Energy Level
1,850.30 kJ/mol   
99+
2,850.00 kJ/mol   
33
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+
0.52 g/amp-hr   
99+
Electron Work Function
3.50 eV   
31
Not Available   
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility   
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