Argon Ionization Energy

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

Ar -> Ar¹⁺ = 1520.4 kJ/mol = 363.73 Kcal/mol
Ar¹⁺ -> Ar²⁺ = 2665.2 kJ/mol = 637.61 Kcal/mol
Ar²⁺ -> Ar³⁺ = 3928 kJ/mol = 939.71 Kcal/mol
Ar³⁺ -> Ar⁴⁺ = 5770 kJ/mol = 1380.38 Kcal/mol
Ar⁴⁺ -> Ar⁵⁺ = 7238 kJ/mol = 1731.58 Kcal/mol
Ar⁵⁺ -> Ar⁶⁺ = 8811 kJ/mol = 2107.89 Kcal/mol
Ar⁶⁺ -> Ar⁷⁺ = 12021 kJ/mol = 2875.84 Kcal/mol
Ar⁷⁺ -> Ar⁸⁺ = 13844 kJ/mol = 3311.96 Kcal/mol
Ar⁸⁺ -> Ar⁹⁺ = 40759 kJ/mol = 9750.96 Kcal/mol
Ar⁹⁺ -> Ar¹⁰⁺ = 46186 kJ/mol = 11049.28 Kcal/mol