If the energy of a hydrogen atom is given by the equation: E = (-21.7 x 10-19 J)/n2, which transition below will produce to the LEAST energetic photon?

Aspectroscope breaks light up into its colors, allowing scientists to analyze light from the solar system and universe. by studying the spectral line patterns, widths, strengths and positions, scientists can determine the speed, position, and of celestial bodies. a) age b) origin c) rotation d) temperature