Cerium Ionization Energy

The Cerium Ionization Energy is the energy required to remove from atom one mole of electrons with subsequent production of positively charged ion of Cerium.
Ce -> Ce⁺ + e^-
This process can be repeated many times, but the energy cost is increased dramatically. The general equation for the Cerium is:
Ce^N+ -> Ce^(N+1)+ + e^-

Ce -> Ce¹⁺ = 527.4 kJ/mol = 126.17 Kcal/mol
Ce¹⁺ -> Ce²⁺ = 1047 kJ/mol = 250.48 Kcal/mol
Ce²⁺ -> Ce³⁺ = 1949 kJ/mol = 466.27 Kcal/mol
Ce³⁺ -> Ce⁴⁺ = 3547 kJ/mol = 848.56 Kcal/mol
Ce⁴⁺ -> Ce⁵⁺ = 6800 kJ/mol = 1626.79 Kcal/mol
Ce⁵⁺ -> Ce⁶⁺ = 8200 kJ/mol = 1961.72 Kcal/mol
Ce⁶⁺ -> Ce⁷⁺ = 9700 kJ/mol = 2320.57 Kcal/mol
Ce⁷⁺ -> Ce⁸⁺ = 11800 kJ/mol = 2822.97 Kcal/mol
Ce⁸⁺ -> Ce⁹⁺ = 13200 kJ/mol = 3157.89 Kcal/mol
Ce⁹⁺ -> Ce¹⁰⁺ = 14700 kJ/mol = 3516.75 Kcal/mol