Which of these is emitted when an electron falls from a higher to lower orbital?
A) a neutrino
B) a positron
C) a graviton
D) a photon
E) another electron

Question

Quizplus · Accepted Answer

When an electron falls from a higher to a lower orbital, it emits a photon. This is a fundamental process in quantum mechanics, where the energy difference between the two orbitals is released in the form of electromagnetic radiation, or photons.

Which of These Is Emitted When an Electron Falls from a Higher