Wavelength?

Question

Calculate the wavelengths of the n=4 ----> n=1 and n=4 ----> n=3 transitions and indicate which regions of the spectrum these transitions would occur.

Answer 1

Well, I assume you are referring to atomic absorption spectroscopy. In this case you should have an equation that will give you the change in energy as an electron transfers between the levels. The energy than can the be converted to wavelength using E=hc/lambda.