[HeroWH]

Plasma is a state of matter consisting of positive gaseous ions and electrons. In the plasma state, a mercury atom could be stripped of its 80 electrons and therefore would exist as Hg80+. Calculate the energy required for the first and last ionization step. Calculate the amount of energy require to do this to a mole of mercury atoms

These are the equations:
Hg^79+(g)->Hg^80+(g)+e^-
En=-(2.18x10^-18j) Z^2(1/2^2)

This is the last question on my study guide, im really tired and don't have a clue what this problem wants from me? Im just totally lost! If you guys could help out, that would be awesom