48) A triply ionized beryllium ion?Be³⁺, (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?Be³⁺?? How does this compare to the ground level energy of the hydrogen atom?

49) A triply ionized beryllium ion?Be³⁺, (a beryllium atom with three electrons removed), behaves very much like a hydrogen atom except that the nuclear charge is four times as great. What is the ionization energy of?Be³⁺?? How does this compare to the ionization energy of the hydrogen atom?

50) A triply ionized beryllium ion?Be³⁺, (a beryllium atom with three electrons removed), behaves very much like a hydrogen atom except that the nuclear charge is four times as great. For the hydrogen atom, the wavelength of the photon emitted in the n =2 to n=1 to transition is 122 nm. What is the wavelength of the photon emitted when a?Be³⁺?ion undergoes this transition?

51) What percentage of the mass of an atom is concentrated in the nucleus?

52) in what units is mass measured on the atomic scale?