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Chemical Properties of Rhenium and Protactinium


Chemical Properties of Protactinium and Rhenium


Chemical Properties

Chemical Formula
Re   
Pa   

Isotopes
  
  

Known Isotopes
33   
6
27   
12

Electronegativity
  
  

Pauling Electronegativity
1.90   
11
1.50   
27

Allred Rochow Electronegativity
1.46   
15
1.14   
28

Allen Electronegativity
1.60   
21
Not Available   

Electropositivity
  
  

Pauling Electropositivity
2.10   
99+
2.50   
27

Ionization Energies
  
  

1st Energy Level
760.00 kJ/mol   
20
568.00 kJ/mol   
99+

2nd Energy Level
1,260.00 kJ/mol   
99+
1,128.00 kJ/mol   
99+

3rd Energy Level
2,510.00 kJ/mol   
99+
1,814.00 kJ/mol   
99+

4th Energy Level
3,640.00 kJ/mol   
99+
2,991.00 kJ/mol   
99+

Electrochemical Equivalent
0.99 g/amp-hr   
99+
1.72 g/amp-hr   
99+

Electron Work Function
4.96 eV   
7
Not Available   

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

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