When do electrons emit energy?

When the electron changes levels, it decreases energy and the atom emits photons. The photon is emitted with the electron moving from a higher energy level to a lower energy level. The energy of the photon is the exact energy that is lost by the electron moving to its lower energy level.

When the electrons changes levels, it decreases energy and the atom emits protons. The proton is emitted with the electrons moving from a higher energy level to a lower energy level. The energy of the proton is the exact energy that is lost by the electrons moving to its lower energy level.

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acids are substances that ionize (break off) in an aqueous solution to produce hydrogen (h+) ions

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