Whenever the electron falls from an excited state to a lower level, energy is released in the form of electromagnetic radiation. The Electromagnetic radiation can be light of different wavelengths and therefore different colors
For example, by the absorption of a photon.
by emiting photons
This electron is called excited.
This electron is in an excited unstable state.
An excited electron releases a photon as it returns to ground state.
They are excited and their energy increases and possibly ejects an electron and change their size and shape..They will often absorb part of the radiation; in that case, their energy will increase.
For example, by the absorption of a photon.
a particle traveling in wave form.
Quantum Mechanics
by emiting photons
An atom emits a photon (particle of light) when transitioning from a ground state to its excited state. To obey conservation of energy, the energy gained by the atom when an electron moves to a lower energy level is equal to the energy it loses in emitting the photon. (The energy of a photon is E = hf, where E is the energy, h is Planck's constant, and f is the frequency of the photon.) Conversely, when an atom absorbs a photon (as is the case in absorption spectra), the electron absorbing the photon moves to a higher energy level.
wave theory of light
Fluorescence is produced when an electron excited by an e.m. radiation returns to the ground state and emit a photon.
What form of energy emission accompanies the return of excited electrons to the ground state?
To get excited, it must absorb energy. To get back to its ground state, it releases energy.
Ultraviolet. Most of the spectrum is invisible to people.
A photon will be released!