Chemical Properties of Actinium and Holmium
Chemical Properties
Chemical Formula
Ac
Ho
Isotopes
Known Isotopes
29
10
34
5
Electronegativity
Pauling Electronegativity
1.10
99+
1.23
37
Allred Rochow Electronegativity
1.00
36
1.10
30
Electropositivity
Pauling Electropositivity
2.90
10
2.77
17
Ionization Energies
1st Energy Level
499.00 kJ/mol
99+
581.00 kJ/mol
99+
2nd Energy Level
1,170.00 kJ/mol
99+
1,140.00 kJ/mol
99+
3rd Energy Level
1,900.00 kJ/mol
99+
2,204.00 kJ/mol
99+
4th Energy Level
4,700.00 kJ/mol
23
4,100.00 kJ/mol
34
Electrochemical Equivalent
2.82 g/amp-hr
18
2.02 g/amp-hr
29
Electron Work Function
Not Available
Not Available
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Chemical Stability, Anti Corrosion, Ionization, Radioactive Isotopes, Solubility
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