Asodium vapor lamp operates by using electricity to excite the highest-energy electron to the next highest-energy level. light is produced when the excited electron drops back to the lower level. which two energy levels are involved in this process for the na atom?

The energy levels are: 3s and 3p

Explanation:

The sodium (Na) element, with atomic number 11 (number of protons: Z=11), has the next electronic configuration:  

Z=11:  1s² 2s² 2p⁶ 3s¹ = [Ne] 3s¹    

Hence, the electricity used in a sodium vapor lamp will excite the electron of the energy state n=3 from the s-orbital to the next highest energy p-orbital which then drops back to the lower energy s-orbital by the emission of a photon resulting in the production of light.      

The transition of the electron is:

Excitation: [Ne] 3s¹ → [Ne] 3s⁰ 3p¹

Emission: [Ne] 3p¹ → [Ne] 3s¹                                                                    

So, the energy levels that are involved in the process are 3s and 3p.

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