Complex sentence: In electronic transitions, this process usually involves emission of light near the visible range, related to bond-dissociation energy or ionization energy, which are usually in the range of a few to few tens of eV per bond.
Split into simpler sentences: In electronic transitions, this process usually involves emission of light near the visible range. The amount of energy released is related to bond-dissociation energy or ionization energy and is usually in the range of a few to few tens of eV per bond.