Describe the process of spectrum production by a neon sign.

Question

Describe the process of spectrum production by a neon sign.

a. Neon atoms become excited by electricity, then an electron inside the atom goes to a higher energy level, emitting energy as a photon.

b. Neon atoms become excited by rapid heating, then an electron inside the atom drops to a lower energy level, emitting energy as a photon.

c. Neon atoms can spontaneously become excited, then an electron inside the atom goes to a higher energy level, emitting energy as a photon.

d. Neon atoms become excited by electricity, then an electron inside the atom drops to a lower energy level, emitting energy as a photon

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