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Chemical Properties of Roentgenium and Neptunium

Roentgenium
Neptunium
Chemical Properties of Neptunium and Roentgenium


Chemical Properties
Chemical Formula
Rg   
Np   
Isotopes
  
  
Known Isotopes
1   
34
20   
19
Electronegativity
  
  
Pauling Electronegativity
Not Available   
1.36   
29
Allred Rochow Electronegativity
Not Available   
1.22   
26
Electropositivity
  
  
Pauling Electropositivity
Not Available   
2.64   
25
Ionization Energies
  
  
1st Energy Level
1,022.70 kJ/mol   
3
604.50 kJ/mol   
99+
2nd Energy Level
2,074.40 kJ/mol   
10
1,128.00 kJ/mol   
99+
3rd Energy Level
3,077.90 kJ/mol   
24
1,997.00 kJ/mol   
99+
4th Energy Level
4,052.40 kJ/mol   
36
3,242.00 kJ/mol   
99+
5th Energy Level
5,306.70 kJ/mol   
31
Not Available   
Electrochemical Equivalent
Not Available   
1.77 g/amp-hr   
39
Electron Work Function
Not Available   
Not Available   
Other Chemical Properties
NA   
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
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