An atom will emit photons when one of its electrons goes from
A)the K shell to the L shell.
B)the M shell to the N shell.
C)the K shell to the M shell.
D)the N shell to the L shell.
E)the K shell to the N shell.

Question

Quizplus · Accepted Answer

An atom emits photons when an electron transitions from a higher energy level to a lower energy level. In option D, the electron moves from the N shell to the L shell, which is a transition to a lower energy level, resulting in the emission of a photon.

An Atom Will Emit Photons When One of Its Electrons