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Chemical Properties of Promethium and Meitnerium

Promethium
Meitnerium
Chemical Properties of Meitnerium and Promethium


Chemical Properties
Chemical Formula
Pm   
Mt   
Isotopes
  
  
Known Isotopes
27   
12
4   
33
Electronegativity
  
  
Allred Rochow Electronegativity
1.07   
32
Not Available   
Electropositivity
  
  
Ionization Energies
  
  
1st Energy Level
540.00 kJ/mol   
99+
800.80 kJ/mol   
15
2nd Energy Level
1,050.00 kJ/mol   
99+
1,823.60 kJ/mol   
17
3rd Energy Level
2,150.00 kJ/mol   
99+
2,904.20 kJ/mol   
31
4th Energy Level
3,970.00 kJ/mol   
38
3,859.40 kJ/mol   
99+
5th Energy Level
Not Available   
4,920.80 kJ/mol   
35
Electrochemical Equivalent
1.80 g/amp-hr   
36
Not Available   
Electron Work Function
Not Available   
Not Available   
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes, Radioactivity   
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