An experimenter determines that when a beam of monoenergetic electrons bombards a sample of pure gas, the atoms of the gas are excited if the kinetic energy of each electron in the beam is 3.70 eV or greater.

1. Determine the deBroglie wavelength of the 3.70 eV electrons.

2. Once the gas is excited, it emits monochromatic light; determine the wavelength of this light.