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Chemical Properties of Beryllium and Promethium

Beryllium
Promethium
Chemical Properties of Promethium and Beryllium


Chemical Properties
Chemical Formula
Be   
Pm   
Isotopes
  
  
Known Isotopes
9   
29
27   
12
Electronegativity
  
  
Pauling Electronegativity
1.57   
24
Not Available   
Sanderson Electronegativity
1.81   
12
Not Available   
Allred Rochow Electronegativity
1.47   
14
1.07   
32
Mulliken-Jaffe Electronegativity
1.54   
12
Not Available   
Allen Electronegativity
1.58   
23
Not Available   
Electropositivity
  
  
Pauling Electropositivity
2.43   
30
Not Available   
Ionization Energies
  
  
1st Energy Level
899.50 kJ/mol   
7
540.00 kJ/mol   
99+
2nd Energy Level
1,757.10 kJ/mol   
23
1,050.00 kJ/mol   
99+
3rd Energy Level
14,848.70 kJ/mol   
2
2,150.00 kJ/mol   
99+
4th Energy Level
21,006.60 kJ/mol   
2
3,970.00 kJ/mol   
38
Electrochemical Equivalent
0.17 g/amp-hr   
99+
1.80 g/amp-hr   
36
Electron Work Function
4.98 eV   
6
Not Available   
Other Chemical Properties
Corrosion, Ionization, Radioactive Isotopes   
Ionization, Radioactive Isotopes, Solubility   
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