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Chemical Properties of Tungsten and Niobium

Tungsten
Niobium
Chemical Properties of Niobium and Tungsten


Chemical Properties
Chemical Formula
W   
Nb   
Isotopes
  
  
Known Isotopes
33   
6
17   
22
Electronegativity
  
  
Pauling Electronegativity
2.36   
2
1.60   
23
Sanderson Electronegativity
0.98   
23
1.42   
16
Allred Rochow Electronegativity
1.40   
19
1.23   
25
Allen Electronegativity
1.47   
29
1.41   
31
Electropositivity
  
  
Pauling Electropositivity
1.64   
99+
2.40   
31
Ionization Energies
  
  
1st Energy Level
770.00 kJ/mol   
16
652.10 kJ/mol   
99+
2nd Energy Level
1,700.00 kJ/mol   
29
1,380.00 kJ/mol   
99+
3rd Energy Level
Not Available   
2,416.00 kJ/mol   
99+
4th Energy Level
Not Available   
3,700.00 kJ/mol   
99+
5th Energy Level
Not Available   
4,877.00 kJ/mol   
36
6th Energy Level
Not Available   
9,847.00 kJ/mol   
11
7th Energy level
Not Available   
12,100.00 kJ/mol   
14
Electrochemical Equivalent
1.14 g/amp-hr   
99+
0.69 g/amp-hr   
99+
Electron Work Function
4.55 eV   
13
4.30 eV   
18
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   
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