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Chemical Properties of Tantalum and Neptunium
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Tantalum
Neptunium
Chemical Properties of Neptunium and Tantalum
Summary
Periodic Table
Facts
Uses
Physical
Chemical
Atomic
Mechanical
Magnetic
Thermal
All
Chemical Properties
Chemical Formula
Ta
Np
Isotopes
Known Isotopes
31
8
20
19
Electronegativity
Pauling Electronegativity
1.50
27
1.36
29
Allred Rochow Electronegativity
1.33
22
1.22
26
Allen Electronegativity
1.34
33
Not Available
Electropositivity
Pauling Electropositivity
2.50
27
2.64
25
Ionization Energies
1st Energy Level
761.00 kJ/mol
18
604.50 kJ/mol
99+
2nd Energy Level
1,500.00 kJ/mol
40
1,128.00 kJ/mol
99+
3rd Energy Level
Not Available
1,997.00 kJ/mol
99+
4th Energy Level
Not Available
3,242.00 kJ/mol
99+
Electrochemical Equivalent
1.35 g/amp-hr
99+
1.77 g/amp-hr
39
Electron Work Function
4.25 eV
21
Not Available
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility
Ionization, Radioactive Isotopes, Radioactivity, Solubility
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