Silicon Ionization Energy

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

Si -> Si¹⁺ = 786.5 kJ/mol = 188.16 Kcal/mol
Si¹⁺ -> Si²⁺ = 1577.1 kJ/mol = 377.30 Kcal/mol
Si²⁺ -> Si³⁺ = 3231.4 kJ/mol = 773.06 Kcal/mol
Si³⁺ -> Si⁴⁺ = 4355.5 kJ/mol = 1041.99 Kcal/mol
Si⁴⁺ -> Si⁵⁺ = 16091 kJ/mol = 3849.52 Kcal/mol
Si⁵⁺ -> Si⁶⁺ = 19784 kJ/mol = 4733.01 Kcal/mol
Si⁶⁺ -> Si⁷⁺ = 23786 kJ/mol = 5690.43 Kcal/mol
Si⁷⁺ -> Si⁸⁺ = 29252 kJ/mol = 6998.09 Kcal/mol
Si⁸⁺ -> Si⁹⁺ = 33876 kJ/mol = 8104.31 Kcal/mol
Si⁹⁺ -> Si¹⁰⁺ = 38732 kJ/mol = 9266.03 Kcal/mol