Final answer:
The emission of an electron transitioning from a higher energy state to the ground state in a hydrogen atom results in ultraviolet radiation, part of the Lyman series of lines in the electromagnetic spectrum.A is the cvorrect.
Step-by-step explanation:
When the electron of a hydrogen atom jumps from a higher energy state to the ground state, the type of electromagnetic waves that are emitted is ultraviolet radiation.
This transition is part of the Lyman series, which specifically involves electron transitions to or from the hydrogen atom's ground state. These transitions release photons in the ultraviolet (UV) part of the electromagnetic spectrum, as the energy levels involved in these transitions are high enough to result in this type of emission.
If we refer to the energy-level diagram for a hydrogen atom, the transitions to the ground state indeed emit ultraviolet radiation, which is just above the visible range and begins at frequencies higher than violet light. Therefore, the mentioned correct option in the final answer for the type of electromagnetic wave emitted when an electron in a hydrogen atom drops to the ground state is ultraviolet radiation.