Germanium Ionization Energy

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

Ge -> Ge¹⁺ = 762.1 kJ/mol = 182.32 Kcal/mol
Ge¹⁺ -> Ge²⁺ = 1537 kJ/mol = 367.70 Kcal/mol
Ge²⁺ -> Ge³⁺ = 3302 kJ/mol = 789.95 Kcal/mol
Ge³⁺ -> Ge⁴⁺ = 4410 kJ/mol = 1055.02 Kcal/mol
Ge⁴⁺ -> Ge⁵⁺ = 9020 kJ/mol = 2157.89 Kcal/mol
Ge⁵⁺ -> Ge⁶⁺ = 11900 kJ/mol = 2846.89 Kcal/mol
Ge⁶⁺ -> Ge⁷⁺ = 15000 kJ/mol = 3588.52 Kcal/mol
Ge⁷⁺ -> Ge⁸⁺ = 18200 kJ/mol = 4354.07 Kcal/mol
Ge⁸⁺ -> Ge⁹⁺ = 21800 kJ/mol = 5215.31 Kcal/mol
Ge⁹⁺ -> Ge¹⁰⁺ = 27000 kJ/mol = 6459.33 Kcal/mol