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The ionization potential of a hydrogen atom is 13.6 eV. How does this compare to the energy of a typical particle at the...

The ionization potential of a hydrogen atom is 13.6 eV. How does this compare to the energy of a typical particle at the recombination epoch, when the temperature of the universe was 3000 K. How does that compare to the energy of photons at the peak of the Planck function at that time? What can you conclude from these comparisons?

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Solution:- Cone tant we hove eseins -3 2.898 xD dpeax T hare, T 300&K we -3 Cpeex3006R = 2.898xiO mik -3 2.898 xD dpeak 3000

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