i.e. when the initial energy level corresponds to 
and the electron in its initial state is no longer bound to the atom at all. [P8.2]
for: a spectroscopic series
is: the shortest possible wavelength in the series. Successive members of the series become closer and closer together in wavelength, converging to the series limit. [P8.2]
can be computed: in an emission line spectrum by setting i.e. when the initial energy level corresponds to and the electron in its initial state is no longer bound to the atom at all. [P8.2]
See spectroscopic series.
Copyright 1997, The Open University