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Chemical Properties of Sodium and Neptunium

Sodium
Neptunium
Chemical Properties of Neptunium and Sodium


Chemical Properties
Chemical Formula
Na   
Np   
Isotopes
  
  
Known Isotopes
17   
22
20   
19
Electronegativity
  
  
Pauling Electronegativity
0.93   
99+
1.36   
29
Sanderson Electronegativity
0.56   
30
Not Available   
Allred Rochow Electronegativity
1.01   
35
1.22   
26
Mulliken-Jaffe Electronegativity
0.91   
21
Not Available   
Allen Electronegativity
0.87   
99+
Not Available   
Electropositivity
  
  
Pauling Electropositivity
3.07   
6
2.64   
25
Ionization Energies
  
  
1st Energy Level
495.80 kJ/mol   
99+
604.50 kJ/mol   
99+
2nd Energy Level
4,562.00 kJ/mol   
4
1,128.00 kJ/mol   
99+
3rd Energy Level
6,910.30 kJ/mol   
6
1,997.00 kJ/mol   
99+
4th Energy Level
9,543.00 kJ/mol   
5
3,242.00 kJ/mol   
99+
5th Energy Level
13,354.00 kJ/mol   
4
Not Available   
6th Energy Level
16,613.00 kJ/mol   
4
Not Available   
7th Energy level
20,117.00 kJ/mol   
4
Not Available   
8th Energy Level
25,496.00 kJ/mol   
4
Not Available   
9th Energy Level
28,932.00 kJ/mol   
4
Not Available   
10th Energy Level
141,362.00 kJ/mol   
2
Not Available   
11th Energy Level
159,076.00 kJ/mol   
2
Not Available   
Electrochemical Equivalent
0.86 g/amp-hr   
99+
1.77 g/amp-hr   
39
Electron Work Function
2.75 eV   
40
Not Available   
Other Chemical Properties
Chemical Stability, Corrosion, Flammability, Ionization, Solubility   
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Atomic >>
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