What is the binding energy of positronium compared to hydrogen?

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Positronium (Ps) is an exotic atom formed by an electron and its anti-particle, a positron. Its binding energy can be deduced from hydrogen's binding energy of 13.6 MeV, but due to the lower reduced mass of positronium, its binding energy is significantly less. The energy levels and orbital characteristics of positronium resemble those of hydrogen, yet the spectral line frequencies are less than half of hydrogen's. This difference arises from the unique mass properties of the positronium system. Understanding these distinctions is crucial for comparing the binding energies of these two atomic systems.
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hello everyone. what is positronium, and how can its binding energy be deduced from the fact that the binding energy of hydrogen is 13.6 Mev?
 
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Positronium (Ps) is a system consisting of an electron and its anti-particle, a positron, bound together into an "exotic atom". The orbit of the two particles and the set of energy levels is similar to that of the hydrogen atom (electron and proton). However, because of the lower reduced mass, the frequencies associated with the spectral lines are less than half of those of the corresponding hydrogen lines.

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