Consider a lower energy level situated \(200 \mathrm{~cm}^{-1}\) from the ground state. There are no other energy levels nearby. Determine the fraction of the population found in this level compared to the ground state population at a temperature of \(300 \mathrm{~K}\).

The conversion from \(\mathrm{cm}^{-1}\) to joules is given by

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= E(joules) 100 hc E(cm).