Question

9cw1
the light given off by an electric discharge through sodium vapor is ____.
white light
of a single wavelength
an emission spectrum
a continuous spectrum

Explanation:

When an electric discharge passes through sodium vapor, it emits light. White light is a combination of many wavelengths. A single - wavelength light is very specific (like a laser in some cases). A continuous spectrum has a continuous range of wavelengths (like the light from a hot blackbody). An emission spectrum is produced when atoms (in this case, sodium atoms) in an excited state (due to the electric discharge) emit light at specific wavelengths. Sodium vapor gives off an emission spectrum.

Answer:

an emission spectrum