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a) At what temperature is the equilibrium population of the 2s electronic state of the hydrogen...

a) At what temperature is the equilibrium population of the 2s electronic state of the hydrogen atom half that of the equilibrium population of the 1s state?

(b) Why did I not ask about the reverse (i.e., at what temperature is the equilibrium population of the 2s electronic state of the hydrogen atom double that of the equilibrium population of the 1s state)?

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