Question

What kind of radiation is produced when the electrons move to the first energy level?

Answer 1

Energy is emitted from the atom when the electron jumps from one orbit to another closer to the nucleus.  When an electron jumps from orbit 'n'= 3 to orbit n = 2   producing a photon of red light with an energy of 1.89  EV  (electron volts)   and a wavelength of 656 nanometres