Hydrogen Ionization Energy

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

H -> H¹⁺ = 1312 kJ/mol = 313.88 Kcal/mol