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Chemical Properties of Neptunium and Beryllium


Chemical Properties of Beryllium and Neptunium


Chemical Properties

Chemical Formula
Np   
Be   

Isotopes
  
  

Known Isotopes
20   
19
9   
29

Electronegativity
  
  

Pauling Electronegativity
1.36   
29
1.57   
24

Sanderson Electronegativity
Not Available   
1.81   
12

Allred Rochow Electronegativity
1.22   
26
1.47   
14

Mulliken-Jaffe Electronegativity
Not Available   
1.54   
12

Allen Electronegativity
Not Available   
1.58   
23

Electropositivity
  
  

Pauling Electropositivity
2.64   
25
2.43   
30

Ionization Energies
  
  

1st Energy Level
604.50 kJ/mol   
99+
899.50 kJ/mol   
7

2nd Energy Level
1,128.00 kJ/mol   
99+
1,757.10 kJ/mol   
23

3rd Energy Level
1,997.00 kJ/mol   
99+
14,848.70 kJ/mol   
2

4th Energy Level
3,242.00 kJ/mol   
99+
21,006.60 kJ/mol   
2

Electrochemical Equivalent
1.77 g/amp-hr   
39
0.17 g/amp-hr   
99+

Electron Work Function
Not Available   
4.98 eV   
6

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

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