Sodium vapor lamps are widely used for lighting public areas such as parking lots by emiting 589 nm yellow light. a. how much energy is emitted by one excited sodium atom when it generates a photon? b. How much energy is emitted when 1.00 mole of sodium atoms each generate a photon? Can you help me with this problem. I am studying for a quiz. How do you work this problem? This comes from problems of the day. We do not get answers or how to work them out. We are just supposed to study them after we work them. Thanks.