Atomic hydrogen gives an emission spectrum made up of several discrete wavelengths. Explain how this observation shows that atoms contain discrete electron energy levels.
Fig. 7.1 shows several electron energy levels in atomic hydrogen.
On Fig. 7.1, draw the transition that produces the wavelength of $4.0 \times 10^{-6}\,\text{m}$, and label it with the letter L.
On Fig. 7.1, draw the transition that produces the shortest wavelength, and label it with the letter S.
Calculate the wavelength for the transition you indicated in (i) part 2.
The visible spectrum contains photon energies from about $3.66\,\text{eV}$ down to $1.83\,\text{eV}$. Determine, in $\text{eV}$, the energies of visible photons produced by transitions between the levels shown in Fig. 7.1.