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Chemical Properties of Promethium and Platinum

Promethium
Platinum
Chemical Properties of Platinum and Promethium


Chemical Properties
Chemical Formula
Pm   
Pt   
Isotopes
  
  
Known Isotopes
27   
12
35   
4
Electronegativity
  
  
Pauling Electronegativity
Not Available   
2.28   
3
Allred Rochow Electronegativity
1.07   
32
1.44   
17
Allen Electronegativity
Not Available   
1.72   
16
Electropositivity
  
  
Pauling Electropositivity
Not Available   
1.72   
99+
Ionization Energies
  
  
1st Energy Level
540.00 kJ/mol   
99+
870.00 kJ/mol   
10
2nd Energy Level
1,050.00 kJ/mol   
99+
1,791.00 kJ/mol   
21
3rd Energy Level
2,150.00 kJ/mol   
99+
Not Available   
4th Energy Level
3,970.00 kJ/mol   
38
Not Available   
Electrochemical Equivalent
1.80 g/amp-hr   
36
1.82 g/amp-hr   
35
Electron Work Function
Not Available   
5.65 eV   
1
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Chemical Stability, Anti Corrosion, Ionization   
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