The line spectrum for element X includes a band of green light of wavelength 522 nm. This band corresponds to what energy transition within an atom of element X? Let Planck’s constant h = 4.136 × 10−15 eV ∙ s, and the speed of light c = 3.00 × 108 m/s.
Let's substitute the value of
Then, let's substitute the definition of
Let's substitute the values of
Therefore, this band corresponds to a decrease of