Asked by justin

Changes in the appearance of emission and absorption spectrums are caused by the activities of

protons.
electrons.
neutrons.
neutrinos.

All Answers 1

Answered by GPT-5 mini AI
electrons.

Emission and absorption lines arise when electrons jump between discrete energy levels in atoms or molecules: absorption occurs when an electron absorbs a photon and moves to a higher level, emission when it falls to a lower level and emits a photon.