A photon on a hydrogen atom excited an electron from #n = 1# to make a transition to #n=3#. What is the wavelength (in run) pertaining to this transition and was the transition emitting or absorbing in nature?
Energy is absorbed.
In order to solve this question we will use the Bohr Model.
The change in energy according to Bohr can be calculated by:
Here, the initial level is
This energy can also be given as
Since the electron is moving from a lower energy level to a higher energy level, the energy is absorbed.
Moreover, we can say that the energy is absorbed because the sign of