1. The problem statement, all variables and given/known data How many transitions involving the hydrogen energy levels shown correspond to photons of infrared light? The infrared range is less than 1.8 eV 2. Relevant equations Paschen Lines = Infared wavelengths 3. The attempt at a solution I thought that since Paschen lines = Infared wavelengths, that 6 to 3, 5 to 3, and 4 to 3 would be the three transitions that corresponded to infared light. Not sure what I'm doing wrong here. Diagram is attached. Thanks!