Antimony Ionization Energy

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

Sb -> Sb¹⁺ = 833.7 kJ/mol = 199.45 Kcal/mol
Sb¹⁺ -> Sb²⁺ = 1794 kJ/mol = 429.19 Kcal/mol
Sb²⁺ -> Sb³⁺ = 2443 kJ/mol = 584.45 Kcal/mol
Sb³⁺ -> Sb⁴⁺ = 4260 kJ/mol = 1019.14 Kcal/mol
Sb⁴⁺ -> Sb⁵⁺ = 5400 kJ/mol = 1291.87 Kcal/mol
Sb⁵⁺ -> Sb⁶⁺ = 10400 kJ/mol = 2488.04 Kcal/mol
Sb⁶⁺ -> Sb⁷⁺ = 12700 kJ/mol = 3038.28 Kcal/mol
Sb⁷⁺ -> Sb⁸⁺ = 15200 kJ/mol = 3636.36 Kcal/mol
Sb⁸⁺ -> Sb⁹⁺ = 17800 kJ/mol = 4258.37 Kcal/mol
Sb⁹⁺ -> Sb¹⁰⁺ = 20400 kJ/mol = 4880.38 Kcal/mol