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Chemical Properties of Niobium and Tungsten

Niobium
Tungsten
Chemical Properties of Tungsten and Niobium


Chemical Properties
Chemical Formula
Nb   
W   
Isotopes
  
  
Known Isotopes
17   
22
33   
6
Electronegativity
  
  
Pauling Electronegativity
1.60   
23
2.36   
2
Sanderson Electronegativity
1.42   
16
0.98   
23
Allred Rochow Electronegativity
1.23   
25
1.40   
19
Allen Electronegativity
1.41   
31
1.47   
29
Electropositivity
  
  
Pauling Electropositivity
2.40   
31
1.64   
99+
Ionization Energies
  
  
1st Energy Level
652.10 kJ/mol   
99+
770.00 kJ/mol   
16
2nd Energy Level
1,380.00 kJ/mol   
99+
1,700.00 kJ/mol   
29
3rd Energy Level
2,416.00 kJ/mol   
99+
Not Available   
4th Energy Level
3,700.00 kJ/mol   
99+
Not Available   
5th Energy Level
4,877.00 kJ/mol   
36
Not Available   
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+
1.14 g/amp-hr   
99+
Electron Work Function
4.30 eV   
18
4.55 eV   
13
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes, Solubility   
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