All Problems

Properties of Atoms. Spectra.

Problem 6.101

The wavelengths of the yellow doublet components of the resonance Na line caused by the transition \(3 P \rightarrow 3 S\) are equal to 589.00 and \(589.56 \mathrm{nm} .\) Find the splitting of the \(3 P\) term in eV units.

Reveal Answer
ΔE2πcΔλ/λ2=2.0meV\Delta E \doteq 2 \pi \hbar c \Delta \lambda / \lambda^{2}=2.0 \mathrm{meV}