Muonium, an atom made of a proton and a muon, has a more negative energy level in its first orbit compared to hydrogen due to the greater reduced mass of the muon. The energy level expression for hydrogen, E = -Rhc/n^2, indicates that a larger reduced mass increases R, resulting in a more negative energy value for muonium. The heavier muon requires more energy for the proton to maintain its orbit, which can help conceptualize this phenomenon. Additionally, the muon's velocity is approximately 14 times higher than that of an electron, raising questions about reaching relativistic speeds. The discussion also touches on the implications of binding multiple muons and the potential relativistic effects in such scenarios.
