Wavelength Energy and Frequency

The entire lesson revolves around electrons, so if you don't know electrons yet come HERE, and the correlation between the wavelength of light and energy contained per photon. The basis of calculating the frequency of the light, which can be done by taking the speed of light divided by the wave length your trying to find the energy of, this results in the frequency of the light inversely per second. This also happens to be the Hertz(Hz) of the wavelength. If you multiply Hz by 6.63 x 10e-34, which is known as Plank's Constant you will get the energy of the light per photon, to find energy per mole you would multiply by Avogadro's number. This picture lays out the equation for light. 

This generally sums up how to find energy from wavelength and vice versa. Have a wonderful day.