Question

An electron jumps from energy level 1 to energy level 2 by absorbing a photon of energy 8 eV. What is the most likely energy of the photon that will be emitted by the electron when it moves back down to energy level 1?

Answer 1

The energy required to increase the quantum level of an electron from a lower energy level to a higher one is the same as the energy released when the electron transitions from that same higher energy level to the same lower energy level. Thus, 8eV will be released.