1. Hydrogen energy levels Paschen Lyman Balmer

2. Hydrogen atomic energy levels E=hf = hc/λ

3. Paschen Spectra produced by transitions of electrons from upper energy levels to n=3 level These are in the Infra red region n=infinity n=5 -0.54eV -0.85eV -1.5eV -3.4eV -13.6eV n=4 0.96eV 0.65eV n=3 n=2 n=1

4. Balmer These are in the Violet region Spectra produced by transitions of electrons from upper energy levels to n=2 level n=infinity n=5 -0.54eV -0.85eV -1.5eV -3.4eV -13.6eV n=4 n=3 n=2 n=1

5. Lyman Spectra produced by transitions of electrons from upper energy levels to n=1 level These are in the UV region n=infinity n=5 -0.54eV -0.85eV -1.5eV -3.4eV -13.6eV n=4 n=3 n=2 n=1