Lithium Ionization Energy

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

Li -> Li¹⁺ = 513.3 kJ/mol = 122.80 Kcal/mol
Li¹⁺ -> Li²⁺ = 7298 kJ/mol = 1745.93 Kcal/mol
Li²⁺ -> Li³⁺ = 11814.8 kJ/mol = 2826.51 Kcal/mol