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Chemical Properties of Hafnium and Technetium
f
Hafnium
Technetium
Chemical Properties of Technetium and Hafnium
Summary
Periodic Table
Facts
Uses
Physical
Chemical
Atomic
Mechanical
Magnetic
Thermal
All
Chemical Properties
Chemical Formula
Hf
Tc
Isotopes
Known Isotopes
32
7
18
21
Electronegativity
Pauling Electronegativity
1.30
32
1.90
11
Allred Rochow Electronegativity
1.23
25
1.36
20
Allen Electronegativity
1.16
37
1.51
28
Electropositivity
Pauling Electropositivity
2.70
22
2.10
99+
Ionization Energies
1st Energy Level
658.50 kJ/mol
40
702.00 kJ/mol
36
2nd Energy Level
1,440.00 kJ/mol
99+
1,470.00 kJ/mol
99+
3rd Energy Level
2,250.00 kJ/mol
99+
2,850.00 kJ/mol
33
4th Energy Level
3,216.00 kJ/mol
99+
Not Available
Electrochemical Equivalent
1.66 g/amp-hr
99+
0.52 g/amp-hr
99+
Electron Work Function
3.90 eV
27
Not Available
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility
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