Question

Electrons are capable of emitting energy in the form of light at very narrow ranges of wavelengths. these wavelengths can be measured to find the electron's
a. mass.
b. density.
c. energy level.
d. specific heat.

Answer 1

they can be used to determine the energy level.
This is because the energy of the light emitted will be the same as the difference between the energy level it was at before and after.