Radon Ionization Energy

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

Rn -> Rn¹⁺ = 1037 kJ/mol = 248.09 Kcal/mol