Question: The wavelengths of the yellow doublet components of the resonance Na line caused by the transition 3P 3S are equal to 589.00 and 589.56 nm.

The wavelengths of the yellow doublet components of the resonance Na line caused by the transition 3P → 3S are equal to 589.00 and 589.56 nm. Find the splitting of the 3P term in eV units.

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