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Chemical Properties of Tantalum and Hafnium
f
Tantalum
Hafnium
Chemical Properties of Hafnium and Tantalum
Summary
Periodic Table
Facts
Uses
Physical
Chemical
Atomic
Mechanical
Magnetic
Thermal
All
Chemical Properties
Chemical Formula
Ta
Hf
Isotopes
Known Isotopes
31
8
32
7
Electronegativity
Pauling Electronegativity
1.50
27
1.30
32
Allred Rochow Electronegativity
1.33
22
1.23
25
Allen Electronegativity
1.34
33
1.16
37
Electropositivity
Pauling Electropositivity
2.50
27
2.70
22
Ionization Energies
1st Energy Level
761.00 kJ/mol
18
658.50 kJ/mol
40
2nd Energy Level
1,500.00 kJ/mol
40
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
1.35 g/amp-hr
99+
1.66 g/amp-hr
99+
Electron Work Function
4.25 eV
21
3.90 eV
27
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility
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