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Chemical Properties of Tungsten and Hafnium

Tungsten
Hafnium
Chemical Properties of Hafnium and Tungsten


Chemical Properties
Chemical Formula
W   
Hf   
Isotopes
  
  
Known Isotopes
33   
6
32   
7
Electronegativity
  
  
Pauling Electronegativity
2.36   
2
1.30   
32
Sanderson Electronegativity
0.98   
23
Not Available   
Allred Rochow Electronegativity
1.40   
19
1.23   
25
Allen Electronegativity
1.47   
29
1.16   
37
Electropositivity
  
  
Pauling Electropositivity
1.64   
99+
2.70   
22
Ionization Energies
  
  
1st Energy Level
770.00 kJ/mol   
16
658.50 kJ/mol   
40
2nd Energy Level
1,700.00 kJ/mol   
29
1,440.00 kJ/mol   
99+
3rd Energy Level
Not Available   
2,250.00 kJ/mol   
99+
4th Energy Level
Not Available   
3,216.00 kJ/mol   
99+
Electrochemical Equivalent
1.14 g/amp-hr   
99+
1.66 g/amp-hr   
99+
Electron Work Function
4.55 eV   
13
3.90 eV   
27
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   
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