A triply ionized beryllium ion, Be^3+ (a beryllium atom with three electrons removed), behaves very much like a hydrogen atom, except that the nuclear charge is four times as great.
a) What is the ground-level energy of the beryllium?
b) What is the ionization energy of the beryllium?
c) For the hydrogen atom, the wavelength of the photon emitted in the n = 2 to n = 1 transition is 122 nm. What is the wavelength of the photon emitted when a Be^3+ ion undergoes this transition?