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Chemical Properties of Protactinium and Aluminium

Protactinium
Aluminium
Chemical Properties of Aluminium and Protactinium


Chemical Properties
Chemical Formula
Pa   
Al   
Isotopes
  
  
Known Isotopes
27   
12
11   
27
Electronegativity
  
  
Pauling Electronegativity
1.50   
27
1.61   
22
Sanderson Electronegativity
Not Available   
1.71   
13
Allred Rochow Electronegativity
1.14   
28
1.47   
14
Mulliken-Jaffe Electronegativity
Not Available   
1.83   
8
Allen Electronegativity
Not Available   
1.61   
20
Electropositivity
  
  
Pauling Electropositivity
2.50   
27
2.39   
32
Ionization Energies
  
  
1st Energy Level
568.00 kJ/mol   
99+
577.50 kJ/mol   
99+
2nd Energy Level
1,128.00 kJ/mol   
99+
1,816.70 kJ/mol   
19
3rd Energy Level
1,814.00 kJ/mol   
99+
2,744.80 kJ/mol   
38
4th Energy Level
2,991.00 kJ/mol   
99+
11,577.00 kJ/mol   
3
5th Energy Level
Not Available   
14,842.00 kJ/mol   
2
6th Energy Level
Not Available   
18,379.00 kJ/mol   
2
7th Energy level
Not Available   
23,326.00 kJ/mol   
2
8th Energy Level
Not Available   
27,465.00 kJ/mol   
2
9th Energy Level
Not Available   
31,853.00 kJ/mol   
2
10th Energy Level
Not Available   
38,473.00 kJ/mol   
4
11th Energy Level
Not Available   
42,647.00 kJ/mol   
5
Electrochemical Equivalent
1.72 g/amp-hr   
99+
0.34 g/amp-hr   
99+
Electron Work Function
Not Available   
4.28 eV   
19
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Chemical Stability, Ionization, Radioactive Isotopes   
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