Aluminium Ionization Energy

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

Al -> Al¹⁺ = 577.4 kJ/mol = 138.13 Kcal/mol
Al¹⁺ -> Al²⁺ = 1816.6 kJ/mol = 434.59 Kcal/mol
Al²⁺ -> Al³⁺ = 2744.6 kJ/mol = 656.60 Kcal/mol
Al³⁺ -> Al⁴⁺ = 11575 kJ/mol = 2769.14 Kcal/mol
Al⁴⁺ -> Al⁵⁺ = 14839 kJ/mol = 3550.00 Kcal/mol
Al⁵⁺ -> Al⁶⁺ = 18376 kJ/mol = 4396.17 Kcal/mol
Al⁶⁺ -> Al⁷⁺ = 23293 kJ/mol = 5572.49 Kcal/mol
Al⁷⁺ -> Al⁸⁺ = 27457 kJ/mol = 6568.66 Kcal/mol
Al⁸⁺ -> Al⁹⁺ = 31857 kJ/mol = 7621.29 Kcal/mol
Al⁹⁺ -> Al¹⁰⁺ = 38459 kJ/mol = 9200.72 Kcal/mol