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Chemical Properties of Niobium and Praseodymium

Niobium
Praseodymium
Chemical Properties of Praseodymium and Niobium


Chemical Properties
Chemical Formula
Nb   
Pr   
Isotopes
  
  
Known Isotopes
17   
22
31   
8
Electronegativity
  
  
Pauling Electronegativity
1.60   
23
1.13   
99+
Sanderson Electronegativity
1.42   
16
Not Available   
Allred Rochow Electronegativity
1.23   
25
1.07   
32
Allen Electronegativity
1.41   
31
Not Available   
Electropositivity
  
  
Pauling Electropositivity
2.40   
31
2.87   
12
Ionization Energies
  
  
1st Energy Level
652.10 kJ/mol   
99+
527.00 kJ/mol   
99+
2nd Energy Level
1,380.00 kJ/mol   
99+
1,020.00 kJ/mol   
99+
3rd Energy Level
2,416.00 kJ/mol   
99+
2,086.00 kJ/mol   
99+
4th Energy Level
3,700.00 kJ/mol   
99+
3,761.00 kJ/mol   
99+
5th Energy Level
4,877.00 kJ/mol   
36
5,551.00 kJ/mol   
29
6th Energy Level
9,847.00 kJ/mol   
11
Not Available   
7th Energy level
12,100.00 kJ/mol   
14
Not Available   
Electrochemical Equivalent
0.69 g/amp-hr   
99+
1.75 g/amp-hr   
40
Electron Work Function
4.30 eV   
18
2.70 eV   
99+
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   
Anti Corrosion, Ionization, Radioactive Isotopes   
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