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(i) Calculate the first three energy lev...

(i) Calculate the first three energy levels for positronium.

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To calculate the first three energy levels for positronium, we can follow these steps: ### Step 1: Understanding Positronium Positronium is a bound state of an electron and its antiparticle, the positron. It can be treated similarly to a hydrogen atom, where the electron orbits around the positron. ### Step 2: Determine the Formula for Energy Levels The energy levels for a hydrogen-like atom can be given by the formula: \[ ...
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