Astatine Ionization Energy

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

At -> At¹⁺ = 930 kJ/mol = 222.49 Kcal/mol
At¹⁺ -> At²⁺ = 1600 kJ/mol = 382.78 Kcal/mol
At²⁺ -> At³⁺ = 2900 kJ/mol = 693.78 Kcal/mol
At³⁺ -> At⁴⁺ = 4000 kJ/mol = 956.94 Kcal/mol
At⁴⁺ -> At⁵⁺ = 4900 kJ/mol = 1172.25 Kcal/mol
At⁵⁺ -> At⁶⁺ = 7500 kJ/mol = 1794.26 Kcal/mol
At⁶⁺ -> At⁷⁺ = 8800 kJ/mol = 2105.26 Kcal/mol
At⁷⁺ -> At⁸⁺ = 13300 kJ/mol = 3181.82 Kcal/mol
At⁸⁺ -> At⁹⁺ = 15400 kJ/mol = 3684.21 Kcal/mol
At⁹⁺ -> At¹⁰⁺ = 17700 kJ/mol = 4234.45 Kcal/mol