1. The problem statement, all variables and given/known data The anomalous Zeeman effect is studied in an advanced student laboratory. A spectral lamp is filled with the vapor of an unknown atom. (It is unknown to the student.) The atoms are excited to the 2D5/2 state with a high frequency electromagnetic field. When a static magnetic field of 0.840 Tesla around the lamp is turned on, the single energy level is observed to split. a) How many levels are observed? b) What is the energy difference between the levels? 2. Relevant equations [itex]\Delta[/itex]E=ml[itex]\mu[/itex]bB 3. The attempt at a solution The thing that is throwing me off for part is the 5/2 so I am not sure how this plays a factor in the number of energy levels. Thanks.