Scandium Ionization Energy

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

Sc -> Sc¹⁺ = 631 kJ/mol = 150.96 Kcal/mol
Sc¹⁺ -> Sc²⁺ = 1235 kJ/mol = 295.45 Kcal/mol
Sc²⁺ -> Sc³⁺ = 2389 kJ/mol = 571.53 Kcal/mol
Sc³⁺ -> Sc⁴⁺ = 7089 kJ/mol = 1695.93 Kcal/mol
Sc⁴⁺ -> Sc⁵⁺ = 8844 kJ/mol = 2115.79 Kcal/mol
Sc⁵⁺ -> Sc⁶⁺ = 10720 kJ/mol = 2564.59 Kcal/mol
Sc⁶⁺ -> Sc⁷⁺ = 13320 kJ/mol = 3186.60 Kcal/mol
Sc⁷⁺ -> Sc⁸⁺ = 15310 kJ/mol = 3662.68 Kcal/mol
Sc⁸⁺ -> Sc⁹⁺ = 17369 kJ/mol = 4155.26 Kcal/mol
Sc⁹⁺ -> Sc¹⁰⁺ = 21740 kJ/mol = 5200.96 Kcal/mol