Chlorine Ionization Energy

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

Cl -> Cl¹⁺ = 1251.1 kJ/mol = 299.31 Kcal/mol
Cl¹⁺ -> Cl²⁺ = 2297 kJ/mol = 549.52 Kcal/mol
Cl²⁺ -> Cl³⁺ = 3826 kJ/mol = 915.31 Kcal/mol
Cl³⁺ -> Cl⁴⁺ = 5158 kJ/mol = 1233.97 Kcal/mol
Cl⁴⁺ -> Cl⁵⁺ = 6540 kJ/mol = 1564.59 Kcal/mol
Cl⁵⁺ -> Cl⁶⁺ = 9362 kJ/mol = 2239.71 Kcal/mol
Cl⁶⁺ -> Cl⁷⁺ = 11020 kJ/mol = 2636.36 Kcal/mol
Cl⁷⁺ -> Cl⁸⁺ = 33610 kJ/mol = 8040.67 Kcal/mol
Cl⁸⁺ -> Cl⁹⁺ = 38600 kJ/mol = 9234.45 Kcal/mol
Cl⁹⁺ -> Cl¹⁰⁺ = 43960 kJ/mol = 10516.75 Kcal/mol