Hey, I've looked for a little bit just online and in the forums and still have not gotten a definite answer. My question: why does bond formation release energy? There is a reason I am posting this is the Quantum Physics section. I am very certain that the energy released into the environment is from the bound electrons losing energy and emitting photons. The puzzling part is finding how exactly they do that when they form through a ionic, covalent, etc. bond. When I picture the situation I can come up with many different ways the electrons could possibly lose energy, but I'm not sure if there is just one single instance or several. Also if you could point me in a direction to some sources that give extensive explanations on things like this could you provide those because I just can't seem to find much on the internet. You might have already guessed it but I am pretty new to physics and I just encountered this problem in my high school chem class. Thanks in advance, I am really excited to get some responses, as my teachers didn't exactly understand why either.