Bismuth Ionization Energy

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

Bi -> Bi¹⁺ = 703.2 kJ/mol = 168.23 Kcal/mol
Bi¹⁺ -> Bi²⁺ = 1610 kJ/mol = 385.17 Kcal/mol
Bi²⁺ -> Bi³⁺ = 2466 kJ/mol = 589.95 Kcal/mol
Bi³⁺ -> Bi⁴⁺ = 4372 kJ/mol = 1045.93 Kcal/mol
Bi⁴⁺ -> Bi⁵⁺ = 5400 kJ/mol = 1291.87 Kcal/mol
Bi⁵⁺ -> Bi⁶⁺ = 8520 kJ/mol = 2038.28 Kcal/mol
Bi⁶⁺ -> Bi⁷⁺ = 10300 kJ/mol = 2464.11 Kcal/mol
Bi⁷⁺ -> Bi⁸⁺ = 12300 kJ/mol = 2942.58 Kcal/mol
Bi⁸⁺ -> Bi⁹⁺ = 14300 kJ/mol = 3421.05 Kcal/mol
Bi⁹⁺ -> Bi¹⁰⁺ = 16300 kJ/mol = 3899.52 Kcal/mol