In the energy level diagram shown in the figure below, the electron is excited to the E4 energy level.If the electron transitions to an energy level giving off a photon, which level would produce a photon with the largest wavelength? 
Definitions:
Focus
The center of interest or activity; paying particular attention to a specific topic or task.
Expressing Feelings
The process of communicating emotions or emotional reactions to others, either verbally or through behavior.
Screaming
Emitting a loud, sharp, piercing sound, often as a way to express extreme emotion, alarm, or pain.
Symbolically
In a manner that uses symbols or metaphorical representations to convey meanings, concepts, or ideas beyond their literal sense.
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