Question

How is a line spectra created from a hot gas? a. photons are emitted when the amount of radioactive material in the gas decreases by half. b. ionizing radiation knocks electrons out of an atom and they transform into photons. c. when electrons drop down from a high energy level they emit a photon. d. current flows through a filament and heats it up causing photons to be emitted.

Answer 1

c when electrons drop down from a high energy level they emit a photon.

Step-by-step explanation: