Chemical Properties of Thorium and Terbium
Chemical Properties
Chemical Formula
Th
Tb
Isotopes
Known Isotopes
28
11
26
13
Electronegativity
Pauling Electronegativity
1.30
32
Not Available
Allred Rochow Electronegativity
1.11
29
1.10
30
Electropositivity
Pauling Electropositivity
2.70
22
Not Available
Ionization Energies
1st Energy Level
587.00 kJ/mol
99+
603.40 kJ/mol
99+
2nd Energy Level
1,110.00 kJ/mol
99+
1,174.80 kJ/mol
99+
3rd Energy Level
1,978.00 kJ/mol
99+
2,417.00 kJ/mol
99+
4th Energy Level
2,780.00 kJ/mol
99+
4,203.00 kJ/mol
31
Electrochemical Equivalent
2.16 g/amp-hr
24
1.98 g/amp-hr
31
Electron Work Function
3.41 eV
32
3.00 eV
36
Other Chemical Properties
Corrosion, Ionization, Radioactive Isotopes, Radioactivity
Ionization, Radioactive Isotopes, Solubility
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