The Actinium Ionization Energy is the energy required to remove from atom one mole of electrons with subsequent production of positively charged ion of Actinium.
Ac -> Ac+ + e-
This process can be repeated many times, but the energy cost is increased dramatically. The general equation for the Actinium is:
AcN+ -> Ac(N+1)+ + e-
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Ac -> Ac1+ = 499 kJ/mol = 119.38 Kcal/mol
\nAc1+ -> Ac2+ = 1170 kJ/mol = 279.90 Kcal/mol
\nAc2+ -> Ac3+ = 1900 kJ/mol = 454.55 Kcal/mol
\nAc3+ -> Ac4+ = 4700 kJ/mol = 1124.40 Kcal/mol
\nAc4+ -> Ac5+ = 6000 kJ/mol = 1435.41 Kcal/mol
\nAc5+ -> Ac6+ = 7300 kJ/mol = 1746.41 Kcal/mol
\nAc6+ -> Ac7+ = 9200 kJ/mol = 2200.96 Kcal/mol
\nAc7+ -> Ac8+ = 10500 kJ/mol = 2511.96 Kcal/mol
\nAc8+ -> Ac9+ = 11900 kJ/mol = 2846.89 Kcal/mol
\nAc9+ -> Ac10+ = 15800 kJ/mol = 3779.90 Kcal/mol
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