Below are vibrational and rotational transitions for formaldehyde: a) Compare the energy required for the electronic (Problem Set 3 â Question 5), vibrational, and rotational transitions of formaldehyde. Rank them in order from highest to lowest energy. b) The energy required for vibrational transitions is about (10, 100, 1000, or 10,000) times more than the energy required for rotational transitions. c) The energy required for electronic transitions is about (10, 100, 1000, or 10,000) times more than the energy required for vibrational transitions.